User:Plantdrew/JepsonCommonName
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- Abies amabilis pacific silver fir
- Abies bracteata bristlecone fir
- Abies concolor white fir
- Abies grandis grand fir
- Abies lasiocarpa subalpine fir
- Abies magnifica shasta red fir
- Abies magnifica california red fir
- Abies procera noble fir
- Abronia alpina ramshaw meadows abronia
- Abronia maritima red sand-verbena
- Abronia nana coville's dwarf abronia
- Abronia umbellata pink sand-verbena
- Abronia villosa chaparral sand-verbena
- Abutilon parvulum dwarf abutilon
- Abutilon theophrasti velvet-leaf
- Acacia baileyana cootamundra wattle
- Acacia cyclops western coastal wattle
- Acacia dealbata silver wattle
- Acacia decurrens green wattle
- Acacia longifolia sydney golden wattle
- Acacia mearnsii black wattle
- Acacia melanoxylon blackwood acacia
- Acacia paradoxa kangaroo thorn
- Acacia podalyriifolia queensland silver wattle
- Acacia pycnantha golden wattle
- Acacia redolens vanilla-scented wattle
- Acacia retinodes everblooming wattle
- Acacia saligna golden wreath wattle
- Acacia verticillata star acacia prickly moses
- Acaena novae-zelandiae biddy-biddy
- Acamptopappus shockleyi shockley's goldenhead
- Acamptopappus sphaerocephalus rayless goldenhead
- Acanthomintha duttonii san mateo thornmint
- Acanthomintha ilicifolia san diego thornmint
- Acanthomintha lanceolata santa clara thornmint
- Acanthomintha obovata heart-leaved thornmint
- Acanthomintha obovata san benito thornmint
- Acanthoscyphus parishii abrams' oxytheca
- Acanthoscyphus parishii cienega seca oxytheca
- Acanthoscyphus parishii cushenbury oxytheca
- Acanthoscyphus parishii parish's oxytheca
- Acanthoscyphus parishii flowery puncturebract
- Acer campestre hedge maple
- Acer circinatum vine maple
- Acer glabrum mountain maple
- Acer macrophyllum big-leaf maple
- Acer negundo box elder
- Acer saccharinum silver maple
- Achyronychia cooperi onyx flower frost-mat
- Acleisanthes longiflora angel trumpets
- Acleisanthes nevadensis desert wing-fruit
- Acmispon argophyllus san clemente island bird's-foot trefoil
- Acmispon argophyllus santa cruz island bird's-foot trefoil
- Acmispon argyraeus scrub lotus
- Acmispon argyraeus providence mountains lotus
- Acmispon dendroideus island broom
- Acmispon dendroideus san clemente island lotus
- Acmispon dendroideus san miguel island deerweed
- Acmispon glaber deerweed california broom
- Acmispon haydonii pygmy lotus
- Acmispon prostratus nuttall's acmispon
- Acmispon rubriflorus red-flowered bird's-foot trefoil
- Acroptilon repens russian knapweed
- Adenocaulon bicolor trail plant
- Adenostoma fasciculatum chamise greasewood
- Adenostoma sparsifolium red shank ribbon wood
- Adiantum aleuticum five-finger fern
- Adiantum capillus-veneris southern maidenhair
- Adiantum jordanii california maidenhair
- Adolphia californica california adolphia
- Adonis aestivalis summer pheasant's eye
- Aegilops cylindrica jointed goat grass
- Aegilops geniculata ovate goat grass
- Aegilops neglecta three-awned goat grass
- Aegilops triuncialis barbed goat grass
- Aeschynomene rudis rough jointvetch
- Aesculus californica california buckeye
- Agave deserti desert agave
- Agave deserti simple desert agave
- Agave shawii shaw agave
- Agave utahensis ivory-spined agave
- Agave utahensis clark mountain agave
- Agave utahensis utah agave
- Ageratina adenophora crofton weed
- Ageratina herbacea desert ageratina
- Ageratina occidentalis western snakeroot
- Ageratina shastensis shasta ageratina
- Agrimonia gryposepala common agrimony
- Agrimonia striata britton's agrimony grooved agrimony
- Agrostis avenacea pacific bent grass
- Agrostis blasdalei blasdale's bent grass
- Agrostis capillaris colonial bent
- Agrostis densiflora california bent grass
- Agrostis elliottiana sierra bent grass
- Agrostis exarata spike bent grass
- Agrostis gigantea redtop
- Agrostis hallii hall's bent grass
- Agrostis hendersonii henderson's bent grass
- Agrostis hooveri hoover's bent grass
- Agrostis humilis mountain bent grass
- Agrostis idahoensis idaho redtop
- Agrostis lacuna-vernalis vernal pool bent grass
- Agrostis microphylla small-leaf bent grass
- Agrostis oregonensis oregon redtop
- Agrostis pallens dune bent grass
- Agrostis scabra rough bent grass
- Agrostis stolonifera creeping bent
- Agrostis tandilensis kennedy's bent grass
- Agrostis variabilis mountain bent grass
- Ailanthus altissima tree of heaven
- Aira caryophyllea silver hair grass
- Aira elegans elegant hair grass
- Aira praecox early hair grass
- Albizia julibrissin silk tree mimosa
- Albizia lophantha plume acacia
- Alcea rosea hollyhock
- Alhagi maurorum camel thorn
- Aliciella humillima smallest aliciella
- Aliciella hutchinsifolia desert pale aliciella
- Aliciella latifolia broad-leaved aliciella
- Aliciella leptomeria sand aliciella
- Aliciella lottiae lott's aliciella
- Aliciella micromeria dainty aliciella
- Aliciella monoensis mono lake aliciella
- Aliciella ripleyi ripley's aliciella
- Aliciella triodon coyote gilia
- Alisma gramineum grass alisma
- Allium atrorubens great basin onion
- Allium atrorubens inyo onion
- Allium fimbriatum purdy's onion
- Allium hickmanii hickman's onion
- Allium hoffmanii beegum onion
- Allium howellii mount pinos onion
- Allium jepsonii jepson's onion
- Allium marvinii yucaipa onion
- Allium munzii munz's onion
- Allium nevadense nevada onion
- Allium parishii parish's onion
- Allium peninsulare franciscan onion
- Allium punctum dotted onion
- Allium sanbornii congdon's onion
- Allium sanbornii sanborn's onion
- Allium sativum garlic
- Allium sharsmithiae sharsmith's onion
- Allium shevockii spanish needle onion
- Allium siskiyouense siskiyou onion
- Allium tribracteatum three-bracted onion
- Allium tuolumnense rawhide hill onion
- Allium yosemitense yosemite onion
- Alnus cordata italian alder
- Alnus incana mountain alder
- Alnus rhombifolia white alder
- Alnus rubra red alder
- Alnus viridis siberian alder
- Alnus viridis thinleaf or sitka alder
- Alnus viridis green alder
- Alopecurus aequalis sonoma alopecurus
- Alopecurus aequalis short-awn foxtail
- Alopecurus geniculatus water foxtail
- Alopecurus pratensis meadow foxtail
- Aloysia wrightii wright's beebrush
- Alternanthera philoxeroides alligator weed
- Alyogyne huegelii blue hibiscus
- Amaranthus albus tumbleweed
- Amaranthus arenicola sand amaranth
- Amaranthus blitoides procumbent pigweed
- Amaranthus californicus californian amaranth
- Amaranthus caudatus love-lies-bleeding foxtail amaranth quilete
- Amaranthus cruentus purple amaranth
- Amaranthus fimbriatus fringed amaranth
- Amaranthus hybridus smooth pigweed green amaranth
- Amaranthus hypochondriacus prince's-feather
- Amaranthus palmeri palmer's amaranth
- Amaranthus powellii powell's amaranth
- Amaranthus retroflexus redroot pigweed
- Amaranthus spinosus spiny amaranth thorny amaranth
- Amaranthus torreyi torrey's amaranth
- Amaranthus tuberculatus common waterhemp
- Amaranthus viridis slender amaranth
- Amaranthus watsonii watson's amaranth
- Amaryllis belladonna naked ladies
- Ambrosia ×platyspina hybrid bur-sage
- Ambrosia acanthicarpa annual bur-sage
- Ambrosia ambrosioides big bur-sage
- Ambrosia artemisiifolia common ragweed
- Ambrosia chamissonis beach bur-sage
- Ambrosia chenopodiifolia san diego bur-sage
- Ambrosia dumosa white bur-sage
- Ambrosia eriocentra woolly bur-sage
- Ambrosia ilicifolia holly-leaved bur-sage
- Ambrosia monogyra singlewhorl burrobrush
- Ambrosia psilostachya western ragweed
- Ambrosia pumila san diego ambrosia
- Ambrosia salsola common burrobrush cheesebush
- Ambrosia trifida giant ragweed
- Amelanchier utahensis utah service-berry
- Ammi visnaga bisnaga
- Ammophila arenaria european beachgrass
- Ammoselinum giganteum desert sand-parsley
- Amorpha californica napa false indigo
- Amsinckia douglasiana douglas' fiddleneck
- Amsinckia eastwoodiae eastwood's fiddleneck
- Amsinckia furcata forked fiddleneck
- Amsinckia grandiflora large-flowered fiddleneck
- Amsinckia intermedia common fiddleneck
- Amsinckia lunaris bent-flowered fiddleneck
- Amsinckia lycopsoides bugloss-flowered fiddleneck
- Amsinckia menziesii common fiddleneck small-flowered fiddleneck
- Amsinckia retrorsa rigid fiddleneck
- Amsinckia spectabilis mesa fiddleneck
- Amsinckia spectabilis seaside fiddleneck
- Amsinckia tessellata carrizo fiddleneck
- Amsinckia tessellata desert fiddleneck
- Amsinckia vernicosa waxy fiddleneck
- Anchusa azurea garden alkanet
- Anchusa officinalis common alkanet
- Ancistrocarphus filagineus woolly fishhooks
- Ancistrocarphus keilii santa ynez groundstar
- Andropogon glomeratus southwestern bushy bluestem
- Andropogon virginicus broomsedge bluestem
- Androsace elongata california androsace
- Androsace filiformis slender-stemmed androsace
- Androsace occidentalis western rock-jasmine
- Androsace septentrionalis pygmy-flower rock-jasmine
- Androstephium breviflorum small-flowered androstephium
- Anemopsis californica yerba mansa
- Anethum graveolens dill
- Angelica arguta angelica
- Angelica callii call's angelica
- Angelica kingii king's angelica
- Angelica lucida sea-watch
- Anisocarpus madioides woodland tarweed
- Anisocarpus scabridus scabrid alpine tarplant
- Anisodontea capensis cape mallow
- Anoda cristata violettas
- Anoda pentaschista field anoda
- Anredera cordifolia mignonette vine
- Antennaria flagellaris stoloniferous pussy-toes
- Antennaria marginata white-margined everlasting
- Antennaria pulchella beautiful pussy-toes
- Antennaria suffrutescens evergreen everlasting
- Anthemis arvensis corn chamomile
- Anthemis cotula mayweed
- Anthoxanthum aristatum annual vernal grass
- Anthoxanthum nitens vanilla grass
- Anthoxanthum occidentale california sweet grass
- Anthoxanthum odoratum sweet vernal grass
- Anthriscus caucalis bur-chervil
- Antirrhinum ovatum oval-leaved snapdragon
- Antirrhinum subcordatum dimorphic snapdragon
- Antirrhinum virga twig-like snapdragon
- Aphanisma blitoides aphanisma
- Apium graveolens celery
- Apocynum androsaemifolium bitter dogbane
- Apocynum cannabinum indian hemp
- Aponogeton distachyos cape-pondweed
- Aptenia cordifolia baby sun-rose
- Arabidopsis thaliana mouse-ear cress thale cress
- Arabis blepharophylla coast rockcress
- Arabis mcdonaldiana mcdonald's rockcress
- Arabis modesta modest rockcress
- Arabis oregana oregon rockcress
- Aralia californica elk clover
- Arbutus menziesii pacific madrone
- Arceuthobium americanum lodgepole-pine dwarf mistletoe
- Arceuthobium campylopodum western dwarf mistletoe
- Arceuthobium douglasii douglas-fir dwarf mistletoe
- Arctomecon merriamii white bear poppy
- Arctostaphylos andersonii anderson's manzanita
- Arctostaphylos auriculata mount diablo manzanita
- Arctostaphylos bakeri baker's manzanita
- Arctostaphylos bakeri the cedars manzanita
- Arctostaphylos canescens hoary manzanita
- Arctostaphylos canescens sonoma canescent manzanita
- Arctostaphylos catalinae santa catalina island manzanita
- Arctostaphylos columbiana columbia manzanita
- Arctostaphylos confertiflora santa rosa island manzanita
- Arctostaphylos crustacea crinite manzanita
- Arctostaphylos crustacea eastwood's brittle-leaf manzanita
- Arctostaphylos crustacea island manzanita
- Arctostaphylos crustacea rose's manzanita
- Arctostaphylos crustacea santa cruz island manzanita
- Arctostaphylos cruzensis arroyo de la cruz manzanita
- Arctostaphylos densiflora vine hill manzanita
- Arctostaphylos edmundsii little sur manzanita
- Arctostaphylos franciscana franciscan manzanita
- Arctostaphylos gabilanensis gabilan mountains manzanita
- Arctostaphylos glandulosa del mar manzanita
- Arctostaphylos glandulosa cushing manzanita
- Arctostaphylos glandulosa san gabriel manzanita
- Arctostaphylos glutinosa schreiber's manzanita
- Arctostaphylos hispidula howell's manzanita
- Arctostaphylos hookeri hearsts' manzanita
- Arctostaphylos hookeri hooker's manzanita
- Arctostaphylos hooveri hoover's manzanita
- Arctostaphylos imbricata san bruno mountain manzanita
- Arctostaphylos klamathensis klamath manzanita
- Arctostaphylos luciana santa lucia manzanita
- Arctostaphylos malloryi mallory's manzanita
- Arctostaphylos manzanita konocti manzanita
- Arctostaphylos manzanita contra costa manzanita
- Arctostaphylos mewukka true's manzanita
- Arctostaphylos montana mount tamalpais manzanita
- Arctostaphylos montana presidio manzanita
- Arctostaphylos montaraensis montara manzanita
- Arctostaphylos montereyensis toro manzanita
- Arctostaphylos morroensis morro manzanita
- Arctostaphylos myrtifolia ione manzanita
- Arctostaphylos nevadensis knight's manzanita
- Arctostaphylos nevadensis pine-mat manzanita
- Arctostaphylos nissenana nissenan manzanita
- Arctostaphylos nortensis del norte manzanita
- Arctostaphylos nummularia pygmy manzanita
- Arctostaphylos obispoensis bishop manzanita
- Arctostaphylos ohloneana ohlone manzanita
- Arctostaphylos osoensis oso manzanita
- Arctostaphylos otayensis otay manzanita
- Arctostaphylos pacifica pacific manzanita
- Arctostaphylos pajaroensis pajaro manzanita
- Arctostaphylos pallida pallid manzanita
- Arctostaphylos parryana desert manzanita
- Arctostaphylos parryana parry manzanita
- Arctostaphylos parryana interior manzanita
- Arctostaphylos patula greenleaf manzanita
- Arctostaphylos pechoensis pecho manzanita
- Arctostaphylos pilosula santa margarita manzanita
- Arctostaphylos pumila sandmat manzanita
- Arctostaphylos purissima la purisima manzanita
- Arctostaphylos rainbowensis rainbow manzanita
- Arctostaphylos refugioensis refugio manzanita
- Arctostaphylos regismontana kings mountain manzanita
- Arctostaphylos rudis sand mesa manzanita
- Arctostaphylos silvicola bonny doon manzanita
- Arctostaphylos stanfordiana rincon ridge manzanita
- Arctostaphylos stanfordiana raiche's manzanita
- Arctostaphylos tomentosa dacite manzanita
- Arctostaphylos uva-ursi bear-berry kinnikinnick
- Arctostaphylos virgata marin manzanita
- Arctostaphylos viridissima white-haired manzanita
- Arctostaphylos viscida mariposa manzanita
- Arctotheca calendula capeweed
- Arctotheca prostrata prostrate capeweed
- Arctotis venusta blue-eyed african daisy
- Arenaria lanuginosa rock sandwort spreading sandwort
- Arenaria paludicola marsh sandwort
- Arenaria serpyllifolia thymeleaf sandwort
- Argemone munita chicalote
- Argyrochosma jonesii jones' false cloak-fern
- Argyrochosma limitanea southwestern false cloak-fern
- Aristida adscensionis sixweeks three-awn
- Aristida californica california three-awn mojave three-awn
- Aristida dichotoma churchmouse three-awn
- Aristida divaricata poverty three-awn
- Aristida oligantha oldfield three-awn
- Aristida purpurea fendler three-awn
- Aristida purpurea red three-awn
- Aristida purpurea nealley three-awn
- Aristida purpurea parish three-awn
- Aristida purpurea purple three-awn
- Aristida purpurea wright three-awn
- Aristida ternipes hook three-awn
- Aristocapsa insignis indian valley spineflower
- Armoracia rusticana horse radish
- Arnica cernua serpentine arnica
- Arnica chamissonis chamisso arnica
- Arnica cordifolia heartleaf arnica
- Arnica dealbata mock leopardbane
- Arnica discoidea rayless arnica
- Arnica fulgens hillside arnica
- Arnica lanceolata clasping arnica
- Arnica latifolia broadleaf arnica
- Arnica longifolia spearleaf arnica
- Arnica mollis hairy arnica
- Arnica nevadensis sierra arnica
- Arnica ovata sticky leaf arnica
- Arnica parryi nodding arnica
- Arnica sororia twin arnica
- Arnica spathulata klamath arnica
- Arnica venosa shasta county arnica
- Arnica viscosa mount shasta arnica
- Arrhenatherum elatius tall oat grass
- Artemisia annua sweet annie
- Artemisia arbuscula low sagebrush
- Artemisia biennis biennial wormwood
- Artemisia bigelovii bigelow sagewort
- Artemisia borealis boreal sage
- Artemisia californica california sagebrush
- Artemisia cana silver sagebrush
- Artemisia douglasiana mugwort
- Artemisia dracunculus tarragon
- Artemisia ludoviciana silver wormwood
- Artemisia michauxiana lemon sagewort
- Artemisia nesiotica island sagebrush
- Artemisia norvegica alpine sagewort
- Artemisia nova black sagebrush
- Artemisia palmeri san diego sagewort
- Artemisia pycnocephala coastal sagewort
- Artemisia rothrockii rothrock sagebrush
- Artemisia spiciformis snowfield sagebrush
- Artemisia spinescens budsage
- Artemisia suksdorfii coastal mugwort
- Artemisia tridentata big sagebrush
- Artemisia tridentata mountain sagebrush
- Artemisia tridentata wyoming sagebrush
- Arum italicum italian arum
- Arum palaestinum black calla solomon's lily
- Arundo donax giant reed
- Asarum marmoratum marbled wild-ginger
- Asclepias albicans white-stemmed milkweed
- Asclepias asperula antelope-horns
- Asclepias californica california milkweed
- Asclepias cordifolia purple milkweed
- Asclepias cryptoceras humboldt mountains milkweed
- Asclepias curassavica bloodflower milkweed
- Asclepias eriocarpa kotolo
- Asclepias erosa desert milkweed
- Asclepias fascicularis narrow-leaf milkweed
- Asclepias latifolia broadleaf milkweed
- Asclepias nyctaginifolia mojave milkweed
- Asclepias solanoana serpentine milkweed
- Asclepias speciosa showy milkweed
- Asclepias subulata rush milkweed
- Asclepias vestita woolly milkweed
- Aspidotis californica california lace fern
- Aspidotis carlotta-halliae carlotta hall's lace fern
- Aspidotis densa dense lace fern
- Asplenium septentrionale northern spleenwort
- Asplenium trichomanes maidenhair spleenwort
- Asplenium vespertinum western spleenwort
- Asplenium viride green spleenwort
- Astragalus agnicidus humboldt county milkvetch
- Astragalus agrestis field milkvetch
- Astragalus albens cushenbury milkvetch
- Astragalus allochrous playa milkvetch
- Astragalus anxius ash valley milkvetch
- Astragalus argophyllus silver-leaved milkvetch
- Astragalus atratus darwin mesa milkvetch
- Astragalus bicristatus crested milkvetch
- Astragalus brauntonii braunton's milkvetch
- Astragalus breweri brewer's milkvetch
- Astragalus californicus klamath milkvetch
- Astragalus calycosus torrey's milkvetch
- Astragalus cicer chickpea milkvetch
- Astragalus cimae cima milkvetch
- Astragalus cimae inflated cima milkvetch
- Astragalus claranus clara hunt's milkvetch
- Astragalus clevelandii cleveland's milkvetch
- Astragalus coccineus scarlet milkvetch
- Astragalus crotalariae salton milkvetch
- Astragalus curtipes morro milkvetch
- Astragalus curvicarpus sickle milkvetch
- Astragalus deanei dean's milkvetch
- Astragalus didymocarpus miles' milkvetch
- Astragalus didymocarpus two-seeded milkvetch
- Astragalus douglasii jacumba milkvetch
- Astragalus douglasii douglas milkvetch
- Astragalus ertterae walker pass milkvetch
- Astragalus filipes basalt milkvetch
- Astragalus funereus black milkvetch
- Astragalus gambelianus gambel milkvetch little blue loco
- Astragalus geyeri geyer's milkvetch
- Astragalus gibbsii gibbs' milkvetch
- Astragalus gilmanii gilman's milkvetch
- Astragalus hornii horn's milkvetch
- Astragalus insularis harwood's milkvetch
- Astragalus inversus susanville milkvetch
- Astragalus inyoensis inyo milkvetch
- Astragalus iodanthus snake milkvetch
- Astragalus iodanthus humboldt river milkvetch
- Astragalus jaegerianus lane mountain milkvetch
- Astragalus johannis-howellii long valley milkvetch
- Astragalus kentrophyta sweetwater mountains milkvetch
- Astragalus kentrophyta spiny-leaved milkvetch
- Astragalus kentrophyta spiny milkvetch
- Astragalus layneae layne milkvetch
- Astragalus lemmonii lemmon's milkvetch
- Astragalus lentiformis lens-pod milkvetch
- Astragalus lentiginosus san antonio milkvetch
- Astragalus lentiginosus borrego milkvetch
- Astragalus lentiginosus coachella valley milkvetch
- Astragalus lentiginosus fremont's milkvetch
- Astragalus lentiginosus kern plateau milkvetch
- Astragalus lentiginosus shining milkvetch
- Astragalus lentiginosus fish slough milkvetch
- Astragalus lentiginosus sodaville milkvetch
- Astragalus lentiginosus big bear valley milkvetch
- Astragalus lentiginosus freckled milkvetch
- Astragalus leucolobus big bear valley woollypod
- Astragalus macrodon salinas milkvetch
- Astragalus magdalenae peirson's milkvetch
- Astragalus miguelensis san miguel island milkvetch
- Astragalus mohavensis curved-pod milkvetch
- Astragalus monoensis mono milkvetch
- Astragalus nevinii san clemente island milkvetch
- Astragalus newberryi newberry's milkvetch
- Astragalus nutans providence mountains milkvetch
- Astragalus nuttallianus small-flowered milkvetch
- Astragalus nuttallii ocean bluff milkvetch
- Astragalus nuttallii nuttall's milkvetch
- Astragalus oocarpus san diego milkvetch
- Astragalus oophorus lavin's milkvetch
- Astragalus oophorus egg milkvetch
- Astragalus oxyphysus stanislaus milkvetch
- Astragalus pachypus jaeger's bush milkvetch
- Astragalus pachypus bush milkvetch
- Astragalus pauperculus depauperate milkvetch
- Astragalus platytropis broad-keeled milkvetch
- Astragalus preussii lancaster milkvetch
- Astragalus preussii preuss' milkvetch
- Astragalus pseudiodanthus tonopah milkvetch
- Astragalus pulsiferae modoc plateau milkvetch
- Astragalus pulsiferae pulsifer's milkvetch
- Astragalus pulsiferae suksdorf's milkvetch
- Astragalus purshii pursh's milkvetch
- Astragalus pycnostachyus ventura marsh milkvetch
- Astragalus pycnostachyus coastal marsh milkvetch
- Astragalus rattanii jepson's milkvetch
- Astragalus rattanii rattan's milkvetch
- Astragalus ravenii raven's milkvetch
- Astragalus sepultipes bishop milkvetch
- Astragalus serenoi shockley's milkvetch
- Astragalus shevockii shevock's milkvetch
- Astragalus subvestitus kern county milkvetch
- Astragalus tener ferris' milkvetch
- Astragalus tener alkali milkvetch
- Astragalus tener coastal dunes milkvetch
- Astragalus tidestromii tidestrom's milkvetch
- Astragalus traskiae trask's milkvetch
- Astragalus tricarinatus triple-ribbed milkvetch
- Astragalus trichopodus antisell milkvetch
- Astragalus trichopodus santa barbara milkvetch
- Astragalus umbraticus bald mountain milkvetch
- Astragalus webberi webber's milkvetch
- Astragalus whitneyi woolly-leaved milkvetch
- Astragalus whitneyi balloon milkvetch
- Astrolepis cochisensis scaly cloak-fern
- Atriplex amnicola swamp saltbush
- Atriplex argentea hillman's silverscale
- Atriplex argentea pahrump orach
- Atriplex argentea silverscale
- Atriplex canescens caleb saltbush
- Atriplex canescens slenderleaf saltbush
- Atriplex canescens salton saltbush
- Atriplex canescens four-wing saltbush
- Atriplex confertifolia shadscale
- Atriplex cordulata earlimart orach
- Atriplex cordulata heartscale
- Atriplex coronata crownscale
- Atriplex coronata san jacinto valley crownscale
- Atriplex coronata lost hills crownscale
- Atriplex coulteri coulter's saltbush
- Atriplex depressa brittlescale
- Atriplex dioica thickleaf orach
- Atriplex elegans mecca orach
- Atriplex elegans wheelscale
- Atriplex fruticulosa ballscale little oak orach
- Atriplex gardneri falcate saltbush
- Atriplex gmelinii gmelin's saltbush
- Atriplex hortensis garden orach
- Atriplex hymenelytra desert-holly
- Atriplex lentiformis big saltbush
- Atriplex leucophylla beach saltbush
- Atriplex micrantha russian atriplex
- Atriplex minuscula lesser saltscale
- Atriplex pacifica south coast saltscale
- Atriplex parishii parish's brittlescale
- Atriplex patula spear orach
- Atriplex persistens vernal pool smallscale
- Atriplex polycarpa allscale saltbush
- Atriplex prostrata fat-hen
- Atriplex pusilla smooth saltbush
- Atriplex rosea tumbling orach
- Atriplex semibaccata australian saltbush
- Atriplex serenana davidson's saltscale
- Atriplex serenana bractscale stinking orach
- Atriplex spinifera spiny saltbush
- Atriplex suberecta sprawling saltbush
- Atriplex subtilis subtle orach
- Atriplex torreyi torrey's saltbush
- Atriplex truncata wedgescale
- Atriplex tularensis bakersfield smallscale
- Avena barbata slender wild oat
- Avena fatua wild oat
- Avena sativa cultivated oat
- Avena sterilis animated oat
- Avicennia marina gray mangrove
- Ayenia compacta california ayenia
- Azolla microphylla mexican mosquito fern
- Baccharis glutinosa marsh baccharis
- Baccharis malibuensis malibu baccharis
- Baccharis pilularis coyote brush
- Baccharis plummerae san simeon baccharis
- Baccharis plummerae plummer's baccharis
- Baccharis salicifolia mule fat
- Baccharis sarothroides broom baccharis
- Baccharis sergiloides desert baccharis
- Baccharis vanessae encinitas baccharis
- Bahiopsis laciniata san diego viguiera
- Bahiopsis parishii parish's goldeneye
- Bahiopsis reticulata death valley goldeneye
- Balsamorhiza lanata woolly balsamroot
- Balsamorhiza sericea silky balsamroot
- Balsamorhiza serrata serrated balsamroot
- Barbarea verna early winter cress
- Barbarea vulgaris yellow rocket
- Batis maritima saltwort beachwort
- Beckmannia syzigachne american slough grass
- Bellardia trixago mediterranean linseed
- Bellis perennis english daisy
- Bensoniella oregona bensoniella
- Berberis harrisoniana kofa mountain barberry
- Berberis nevinii nevin's barberry
- Berberis pinnata island barberry
- Bergerocactus emoryi golden-spined cereus
- Beta vulgaris sea beet
- Betula glandulosa dwarf resin birch
- Betula occidentalis water birch
- Bidens cernua nodding bur-marigold
- Bidens frondosa sticktight
- Bidens laevis bur-marigold
- Bidens pilosa common beggar-ticks
- Billardiera heterophylla australian bluebell
- Bistorta bistortoides western bistort
- Bituminaria bituminosa arabian pea
- Blechnum spicant deer fern
- Blennosperma bakeri sonoma sunshine
- Blennosperma nanum point reyes blennosperma
- Blepharidachne kingii king's eyelash grass
- Blepharizonia plumosa big tarplant
- Bloomeria clevelandii san diego goldenstar
- Bloomeria crocea mountain goldenstar
- Bloomeria crocea common goldenstar
- Bloomeria humilis dwarf goldenstar
- Boechera acutina pointed rockcress
- Boechera arcuata arching rockcress
- Boechera bodiensis bodie hills rockcress
- Boechera breweri brewer's rockcress
- Boechera breweri shasta rockcress
- Boechera calderi calder's rockcress
- Boechera californica california rockcress
- Boechera cobrensis masonic rockcress
- Boechera constancei constance's rockcress
- Boechera covillei coville's rockcress
- Boechera davidsonii davidson's rockcress
- Boechera depauperata soldier rockcress
- Boechera dispar pinyon rockcress
- Boechera divaricarpa spreadingpod rockcress
- Boechera elkoensis elko rockcress
- Boechera evadens hidden rockcress
- Boechera glaucovalvula bluepod rockcress
- Boechera hoffmannii hoffmann's rockcress
- Boechera howellii howell's rockcress
- Boechera inyoensis inyo rockcress
- Boechera johnstonii johnston's rockcress
- Boechera koehleri koehler's rockcress
- Boechera lemmonii lemmon's rockcress
- Boechera lincolnensis lincoln rockcress
- Boechera lyallii lyall's rockcress
- Boechera parishii parish's rockcress
- Boechera pauciflora hairy stem rockcress
- Boechera paupercula small-flowered rockcress
- Boechera peirsonii peirson's rockcress
- Boechera pendulina rabbit-ear rockcress
- Boechera pendulocarpa dropseed rockcress
- Boechera perennans perennial rockcress
- Boechera pinetorum woodland rockcress
- Boechera pinzliae pinzl's rockcress
- Boechera platysperma pioneer rockcress
- Boechera pratincola meadow rockcress
- Boechera puberula silver rockcress
- Boechera pulchra beautiful rockcress
- Boechera pygmaea tulare county rockcress
- Boechera rectissima bristly leaf rockcress
- Boechera repanda yosemite rockcress
- Boechera retrofracta reflexed rockcress
- Boechera rigidissima trinity mountain rockcress
- Boechera rollei rolle's rockcress
- Boechera rubicundula mount day rockcress
- Boechera serpenticola serpentine rockcress
- Boechera shevockii shevock's rockcress
- Boechera shockleyi shockley's rockcress
- Boechera sparsiflora sicklepod rockcress
- Boechera stricta drummond's rockcress
- Boechera subpinnatifida klamath rockcress
- Boechera suffrutescens woody rockcress
- Boechera tiehmii tiehm's rockcress
- Boechera tularensis tulare rockcress
- Boechera ultraalsa snow mountain rockcress
- Boechera xylopoda bigfoot hybrid rockcress
- Boechera yorkii last chance rockcress
- Boerhavia coccinea scarlet spiderling
- Bolandra californica sierra bolandra
- Bolboschoenus fluviatilis river bulrush
- Bolboschoenus maritimus saltmarsh bulrush alkali bulrush
- Bolboschoenus robustus seacoast bulrush
- Bothriochloa barbinodis cane bluestem
- Bothriochloa ischaemum king ranch bluestem
- Bothriochloa laguroides silver bluestem
- Botrychium ascendens upswept moonwort
- Botrychium crenulatum scalloped moonwort
- Botrychium lineare slender moonwort
- Botrychium lunaria common moonwort
- Botrychium minganense mingan moonwort
- Botrychium montanum western goblin
- Botrychium paradoxum paradox moonwort
- Botrychium pinnatum northwestern moonwort
- Botrychium pumicola pumice moonwort
- Botrychium simplex yosemite moonwort
- Botrychium simplex least moonwort
- Botrychium tunux moosewort
- Botrychium yaaxudakeit giant moonwort
- Bouteloua aristidoides needle grama
- Bouteloua barbata sixweeks grama
- Bouteloua curtipendula side-oats grama
- Bouteloua eriopoda black grama
- Bouteloua gracilis blue grama
- Bouteloua trifida three-awned grama
- Brassica juncea india mustard
- Brassica napus swede rape rapeseed
- Brassica nigra black mustard
- Brassica oleracea cabbage
- Brassica rapa turnip field mustard
- Brickellia atractyloides pungent brickellbush
- Brickellia atractyloides spearleaf brickellbush
- Brickellia californica california brickellbush
- Briza maxima rattlesnake grass large quaking grass
- Briza minor annual quaking grass small quaking grass
- Brodiaea californica california brodiaea
- Brodiaea coronaria garland brodiaea
- Brodiaea elegans harvest brodiaea
- Brodiaea filifolia thread-leaved brodiaea
- Brodiaea insignis kaweah brodiaea
- Brodiaea jolonensis mesa brodiaea chaparral cluster-lily
- Brodiaea kinkiensis san clemente island brodiaea
- Brodiaea leptandra narrow-flowered california brodiaea
- Brodiaea minor small brodiaea
- Brodiaea nana dwarf brodiaea
- Brodiaea orcuttii orcutt's brodiaea
- Brodiaea pallida chinese camp brodiaea
- Brodiaea rosea indian valley brodiaea
- Brodiaea santarosae santa rosa basalt brodiaea
- Brodiaea sierrae sierra foothills brodiaea
- Brodiaea stellaris star brodiaea
- Bromus arenarius australian chess
- Bromus arizonicus arizona brome
- Bromus arvensis field brome
- Bromus berteroanus chilean chess
- Bromus briziformis rattlesnake chess
- Bromus carinatus mountain brome
- Bromus carinatus california brome
- Bromus catharticus rescue grass
- Bromus catharticus chilean brome
- Bromus ciliatus fringed brome
- Bromus commutatus hairy chess meadow brome
- Bromus diandrus ripgut grass
- Bromus grandis tall brome
- Bromus hallii hall's brome
- Bromus hordeaceus soft chess
- Bromus inermis smooth brome hungarian brome
- Bromus japonicus japanese chess japanese brome
- Bromus laevipes chinook brome woodland brome
- Bromus madritensis foxtail chess madrid brome
- Bromus madritensis red brome
- Bromus maritimus maritime brome
- Bromus orcuttianus orcutt's brome
- Bromus polyanthus great basin brome colorado brome
- Bromus porteri nodding brome
- Bromus pseudolaevipes woodland brome
- Bromus racemosus smooth brome
- Bromus richardsonii richardson's brome
- Bromus secalinus rye brome
- Bromus sitchensis sitka brome alaska brome
- Bromus squarrosus corn brome
- Bromus sterilis poverty brome
- Bromus suksdorfii suksdorf's brome
- Bromus tectorum cheat grass downy chess
- Bromus vulgaris columbia brome
- Buddleja davidii butterfly bush summer lilac
- Buddleja saligna false olive
- Buddleja utahensis panamint butterfly bush
- Bulbine semibarbata leek lily
- Bulbostylis capillaris thread-leaved beakseed
- Bursera microphylla littleleaf elephant tree
- Caesalpinia gilliesii bird-of-paradise
- Caesalpinia spinosa tara
- Calamagrostis bolanderi bolander's reed grass
- Calamagrostis breweri short hair reed grass
- Calamagrostis canadensis bluejoint reed grass
- Calamagrostis foliosa leafy reed grass
- Calamagrostis koelerioides dense-pine reed grass
- Calamagrostis muiriana muir's reed grass
- Calamagrostis nutkaensis pacific reed grass
- Calamagrostis ophitidis serpentine reed grass
- Calamagrostis purpurascens purple reed grass
- Calamagrostis rubescens pine reed grass
- Calamagrostis stricta slipstem reed grass
- Calandrinia breweri brewer's calandrinia
- Calandrinia menziesii red maids
- Calendula arvensis field-marigold
- Calendula officinalis pot-marigold
- Calia secundiflora texas mountain laurel
- California macrophylla round-leaved filaree
- Calliandra eriophylla pink fairy-duster
- Callitropsis nootkatensis alaska cedar
- Calochortus albus white globe lily fairy-lantern
- Calochortus amabilis diogenes' lantern
- Calochortus argillosus clay mariposa lily
- Calochortus catalinae catalina mariposa lily
- Calochortus clavatus pleasant valley mariposa lily
- Calochortus clavatus club-haired mariposa lily
- Calochortus clavatus slender mariposa lily
- Calochortus clavatus arroyo de la cruz mariposa lily
- Calochortus coeruleus beavertail-grass
- Calochortus dunnii dunn's mariposa lily
- Calochortus elegans cat's ear
- Calochortus excavatus inyo county star-tulip
- Calochortus greenei greene's mariposa lily
- Calochortus longebarbatus long-haired star-tulip
- Calochortus monanthus single-flowered mariposa lily
- Calochortus monophyllus yellow star-tulip
- Calochortus obispoensis san luis mariposa lily
- Calochortus palmeri san jacinto mariposa lily
- Calochortus palmeri palmer's mariposa lily
- Calochortus panamintensis panamint mariposa lily
- Calochortus persistens siskiyou mariposa lily
- Calochortus plummerae plummer's mariposa lily
- Calochortus pulchellus mount diablo fairy-lantern
- Calochortus raichei the cedars fairy-lantern
- Calochortus simulans la panza mariposa lily
- Calochortus striatus alkali mariposa lily
- Calochortus syntrophus callahan's mariposa lily
- Calochortus tiburonensis tiburon mariposa lily
- Calochortus tolmiei pussy ears
- Calochortus umbellatus oakland star-tulip
- Calochortus uniflorus pink star-tulip
- Calochortus weedii intermediate mariposa lily
- Calochortus westonii shirley meadows star-tulip
- Calycadenia hooveri hoover's calycadenia
- Calycadenia micrantha small-flowered calycadenia
- Calycadenia oppositifolia butte county calycadenia
- Calycadenia truncata rosin weed
- Calycadenia villosa dwarf calycadenia
- Calycanthus occidentalis sweet-shrub spicebush
- Calycoseris parryi yellow tack-stem
- Calycoseris wrightii white tack-stem
- Calyptridium parryi santa cruz mountains pussypaws
- Calyptridium pulchellum mariposa pussypaws
- Calyptridium pygmaeum pygmy pussypaws
- Calyptridium quadripetalum four-petaled pussypaws
- Calyptridium roseum rosy calyptridium
- Calystegia atriplicifolia butte county morning-glory
- Calystegia collina mount saint helena morning-glory
- Calystegia collina three-fingered morning-glory
- Calystegia collina south coast range morning-glory
- Calystegia macrostegia island morning-glory
- Calystegia peirsonii peirson's morning-glory
- Calystegia purpurata coastal bluff morning-glory
- Calystegia sepium santa barbara morning-glory
- Calystegia sepium hedge bindweed
- Calystegia silvatica large bindweed
- Calystegia stebbinsii stebbins' morning-glory
- Calystegia subacaulis cambria morning-glory
- Camissonia benitensis san benito evening-primrose
- Camissonia integrifolia kern river evening-primrose
- Camissonia kernensis kern county evening-primrose
- Camissonia sierrae mono hot springs evening-primrose
- Camissonia sierrae yosemite evening-primrose
- Camissoniopsis bistorta california sun cup
- Camissoniopsis cheiranthifolia beach evening-primrose
- Camissoniopsis guadalupensis san clemente island evening-primrose
- Camissoniopsis hardhamiae hardham's evening-primrose
- Camissoniopsis lewisii lewis' evening-primrose
- Campanula californica swamp harebell
- Campanula exigua chaparral harebell
- Campanula scabrella rough harebell
- Campanula scouleri scouler's harebell
- Campanula sharsmithiae sharsmith's harebell
- Campanula shetleri castle crags harebell
- Campanula wilkinsiana wilkins' harebell
- Canbya candida white pygmy-poppy
- Cannabis sativa hemp marijuana
- Cardamine californica milk maids tooth wort
- Carduus acanthoides plumeless thistle
- Carduus nutans musk thistle
- Carduus pycnocephalus italian thistle
- Carex abrupta abrupt-beaked sedge (group 11h)
- Carex albonigra black-and-white sedge
- Carex alma sturdy sedge
- Carex amplifolia big-leaf sedge (groups 1,5,6)
- Carex angustata narrow-leaved sedge (group 8)
- Carex aquatilis water sedge
- Carex aquatilis sitka sedge
- Carex arcta northern clustered sedge (group 10)
- Carex atherodes wheat sedge (group 1)
- Carex athrostachya long-bracted sedge (groups 11f,h)
- Carex aurea golden sedge (group 8)
- Carex barbarae whiteroot or santa barbara sedge (group 8)
- Carex bolanderi bolander's sedge (group 10)
- Carex brainerdii brainerd's sedge (group 2)
- Carex brevicaulis short-stemmed sedge (group 2)
- Carex breweri brewer's sedge (group 3)
- Carex buxbaumii buxbaum's sedge (group 6)
- Carex californica california sedge (group 4)
- Carex canescens silvery sedge (group 10)
- Carex capitata capitate sedge (group 3)
- Carex comosa bristly sedge (groups 4,5,6)
- Carex concinnoides northwestern sedge (group 2)
- Carex congdonii congdon's sedge (group 1)
- Carex cusickii cusick's sedge (groups 7,9)
- Carex davyi davy's sedge (group 11e)
- Carex deflexa mountain mat sedge (group 2)
- Carex densa dense sedge (group 9)
- Carex diandra lesser tussock sedge (group 9)
- Carex disperma two-seeded sedge (group 9)
- Carex divulsa gray sedge (group 9)
- Carex douglasii douglas' sedge (group 7)
- Carex duriuscula spikeletrush sedge (group 7)
- Carex echinata star sedge
- Carex echinata coastal star sedge
- Carex exsiccata western inflated sedge (group 5)
- Carex feta green-sheathed sedge (group 11a)
- Carex filifolia sagebrush sedge
- Carex filifolia thread-leaved sedge
- Carex fissuricola cleft sedge (groups 2,4)
- Carex fracta fragile-sheathed sedge (groups 11b,f,g)
- Carex geyeri geyer's sedge
- Carex globosa round-fruited sedge (group 2)
- Carex gracilior slender sedge (groups 11c,d,h)
- Carex gynodynama wonder-woman sedge (group 1)
- Carex halliana oregon sedge (group 2)
- Carex harfordii harford's sedge monterey sedge (groups 11d,f,h)
- Carex hassei hasse's sedge (groups 4,8)
- Carex haydeniana cloud or hayden's sedge (groups 11e,h)
- Carex helleri heller's sedge (group 6)
- Carex hendersonii timber or henderson's sedge (group 4)
- Carex heteroneura smooth-fruited sedge (groups 4,6)
- Carex hirtissima fuzzy sedge (groups 1,4)
- Carex hoodii hood's sedge (group 9)
- Carex hystericina porcupine sedge (groups 5,6)
- Carex idahoa idaho sedge (groups 3,6)
- Carex illota sheep sedge (groups 10,11c)
- Carex incurviformis mount dana or incurved sedge (group 9)
- Carex infirminervia weakly veined sedge (groups 7,10)
- Carex inops volcano or long-rhizomed sedge (group 2)
- Carex integra smooth-beaked sedge (group 11c)
- Carex interior inland sedge (group 10)
- Carex inversa kangaroo or knob sedge (group 10)
- Carex jonesii jones' sedge (group 9)
- Carex klamathensis klamath sedge (groups 4,6)
- Carex laeviculmis smooth-stemmed sedge (group 10)
- Carex lasiocarpa woolly-fruited sedge (groups 1,2)
- Carex leavenworthii leavenworth sedge (group 9)
- Carex lemmonii lemmon's sedge (group 4)
- Carex lenticularis tarn sedge
- Carex lenticularis lagoon sedge
- Carex lenticularis lakeshore sedge
- Carex leporina hare or oval sedge (group 11d)
- Carex leporinella bog hare sedge (group 11d)
- Carex leptalea bristle-stalked sedge (group 3)
- Carex leptopoda slender-footed sedge (group 10)
- Carex limosa mud sedge (group 6)
- Carex livida livid sedge (groups 4,6)
- Carex longii green-and-white sedge (group 11a)
- Carex luzulifolia little-leaved sedge (group 4)
- Carex luzulina woodrush sedge (groups 2,4)
- Carex lyngbyei lyngbye's sedge (group 8)
- Carex mariposana mariposa sedge (group 11h)
- Carex mendocinensis mendocino sedge (groups 1,2,4)
- Carex mertensii mertens' sedge (groups 4,6)
- Carex microptera small-winged sedge (group 11h)
- Carex multicaulis stick sedge (group 3)
- Carex multicostata many-ribbed sedge (groups 11b,g)
- Carex nebrascensis nebraska sedge (group 8)
- Carex nervina sierra sedge (group 9)
- Carex neurophora veined or alpine nerved sedge (group 9)
- Carex nigricans black alpine sedge (group 3)
- Carex nudata torrent sedge (group 8)
- Carex obispoensis san luis obispo sedge (group 2)
- Carex obnupta slough sedge (group 8)
- Carex occidentalis western sedge (group 9)
- Carex pachycarpa furrowed broomsedge (groups 11b,e,g)
- Carex pachystachya starry broomsedge (group 11h)
- Carex pansa sand dune sedge (group 7)
- Carex pellita woolly sedge (groups 1,2)
- Carex pendula pendulous sedge (groups 4,5,6)
- Carex petasata liddon's sedge (groups 11d,e,g,h)
- Carex phaeocephala dunhead or alpine hare sedge (group 11d)
- Carex praeceptorum teacher sedge (group 10)
- Carex praegracilis black creeper or freeway sedge (group 7)
- Carex praticola northern meadow sedge (groups 11d,e,f)
- Carex preslii presl's sedge (groups 11g,h)
- Carex proposita potato chip sedge (group 11h)
- Carex raynoldsii raynold's sedge (groups 4,5,6)
- Carex rossii ross' sedge (group 2)
- Carex saliniformis deceiving sedge (group 8)
- Carex sartwelliana sartwell's or yosemite sedge (group 1)
- Carex scabriuscula siskiyou sedge (groups 1,2)
- Carex schottii schott's sedge (group 8)
- Carex scirpoidea western single-spiked sedge (groups 1,2)
- Carex scoparia pointed broomsedge (groups 11a,g)
- Carex scopulorum mountain sedge (group 8)
- Carex senta western rough sedge (group 8)
- Carex serpenticola serpentine sedge (group 2)
- Carex serratodens saw-toothed sedge (groups 4,6)
- Carex sheldonii sheldon's sedge (group 1)
- Carex simulata short-beaked or analog sedge (group 7)
- Carex specifica narrow-fruited sedge (groups 11b,d,e,g)
- Carex spectabilis showy sedge (group 6)
- Carex spissa san diego sedge (groups 2,4,5,6)
- Carex stevenii steven's sedge (group 6)
- Carex stipata awl-fruited sedge (group 9)
- Carex straminiformis mount shasta sedge (groups 11g,h)
- Carex subbracteata small-bracted sedge (groups 11d,f,h)
- Carex subfusca rusty or pale broomsedge (groups 11f,g,h)
- Carex subnigricans dark mountain sedge (group 3)
- Carex tahoensis tahoe sedge (group 11d)
- Carex texensis texas sedge (group 9)
- Carex tiogana tioga pass sedge (groups 4,6)
- Carex tompkinsii tompkins' sedge (groups 3,6)
- Carex triquetra trigonous sedge (group 2)
- Carex tumulicola foothill sedge (group 9)
- Carex unilateralis one-sided sedge (group 11f)
- Carex utriculata southern beaked sedge (groups 4,5)
- Carex vallicola western valley sedge (group 9)
- Carex vernacula foetid sedge (group 9)
- Carex vesicaria inflated sedge (group 5)
- Carex viridula green yellow sedge (groups 4,5)
- Carex vulpinoidea brown fox sedge (group 9)
- Carex whitneyi whitney's sedge (group 1)
- Carlowrightia arizonica arizona carlowrightia arizona wrightwort
- Carlquistia muirii muir's tarplant
- Carpenteria californica tree-anemone
- Carpobrotus chilensis sea fig
- Carpobrotus edulis freeway iceplant
- Carthamus creticus smooth distaff thistle
- Carthamus lanatus woolly distaff thistle
- Carthamus leucocaulos whitestem distaff thistle
- Carthamus tinctorius safflower
- Carya illinoinensis pecan
- Cassiope mertensiana white heather
- Castela emoryi emory's crucifixion-thorn
- Castilleja affinis oregon coast paintbrush
- Castilleja affinis tiburon paintbrush
- Castilleja ambigua humboldt bay owl's-clover
- Castilleja ambigua johnny-nip
- Castilleja attenuata valley tassels
- Castilleja brevilobata short-lobed paintbrush
- Castilleja campestris succulent owl's-clover
- Castilleja chromosa desert paintbrush
- Castilleja cinerea ash-gray paintbrush
- Castilleja densiflora san luis obispo owl's-clover
- Castilleja exserta purple owl's-clover
- Castilleja foliolosa woolly paintbrush
- Castilleja gleasoni mount gleason paintbrush
- Castilleja grisea san clemente island paintbrush
- Castilleja hololeuca island paintbrush
- Castilleja lasiorhyncha san bernardino mountains owl's-clover
- Castilleja latifolia monterey coast paintbrush
- Castilleja mendocinensis mendocino coast paintbrush
- Castilleja miniata siskiyou paintbrush
- Castilleja mollis soft-leaved paintbrush
- Castilleja montigena heckard's paintbrush
- Castilleja plagiotoma mojave paintbrush
- Castilleja rubicundula pink creamsacs
- Castilleja rubicundula cream sacs
- Castilleja schizotricha split-hair paintbrush
- Catharanthus roseus madagascar periwinkle
- Caulanthus californicus california jewelflower
- Caulanthus crassicaulis thick-stem wild cabbage
- Caulanthus inflatus desert candle
- Caulanthus lasiophyllus california mustard
- Caulanthus lemmonii lemmon's jewelflower
- Caulanthus pilosus chocolate drops
- Caulanthus simulans payson's jewelflower
- Ceanothus arboreus feltleaf ceanothus
- Ceanothus arcuatus arching ceanothus
- Ceanothus confusus rincon ridge ceanothus
- Ceanothus cordulatus mountain whitethorn
- Ceanothus crassifolius hoaryleaf ceanothus
- Ceanothus cuneatus buckbrush
- Ceanothus cuneatus lompoc ceanothus
- Ceanothus cyaneus lakeside ceanothus
- Ceanothus divergens calistoga ceanothus
- Ceanothus diversifolius pine mat
- Ceanothus ferrisiae coyote ceanothus
- Ceanothus foliosus wavyleaf ceanothus
- Ceanothus foliosus la cuesta ceanothus
- Ceanothus foliosus vine hill ceanothus
- Ceanothus fresnensis fresno ceanothus
- Ceanothus gloriosus glory brush
- Ceanothus gloriosus point reyes ceanothus
- Ceanothus gloriosus mount vision ceanothus
- Ceanothus hearstiorum hearsts' ceanothus
- Ceanothus incanus coast whitethorn
- Ceanothus integerrimus deer brush
- Ceanothus jepsonii musk brush
- Ceanothus leucodermis chaparral whitethorn
- Ceanothus maritimus maritime ceanothus
- Ceanothus masonii mason's ceanothus
- Ceanothus megacarpus island ceanothus
- Ceanothus megacarpus bigpod ceanothus
- Ceanothus oliganthus jim brush
- Ceanothus ophiochilus vail lake ceanothus
- Ceanothus otayensis otay mountain ceanothus
- Ceanothus palmeri palmer ceanothus
- Ceanothus papillosus wartleaf ceanothus
- Ceanothus pinetorum kern ceanothus
- Ceanothus prostratus mahala mat
- Ceanothus pumilus siskiyou mat
- Ceanothus purpureus holly-leaved ceanothus
- Ceanothus roderickii pine hill ceanothus
- Ceanothus sanguineus redstem ceanothus
- Ceanothus sonomensis sonoma ceanothus
- Ceanothus spinosus greenbark ceanothus
- Ceanothus thyrsiflorus carmel ceanothus
- Ceanothus thyrsiflorus blue blossom
- Ceanothus verrucosus wart-stemmed ceanothus
- Ceanothus vestitus mojave ceanothus
- Celtis australis nettle-tree
- Celtis reticulata netleaf hackberry
- Celtis sinensis chinese hackberry
- Cenchrus echinatus southern sandbur
- Cenchrus incertus coastal sandbur common sandbur
- Cenchrus longispinus mat sandbur
- Centaurea benedicta blessed thistle
- Centaurea calcitrapa purple star-thistle
- Centaurea cineraria dusty miller
- Centaurea cyanus bachelor's button cornflower
- Centaurea diffusa diffuse knapweed
- Centaurea diluta north african knapweed
- Centaurea iberica iberian star-thistle
- Centaurea jacea brown knapweed
- Centaurea jacea black knapweed
- Centaurea melitensis tocalote
- Centaurea pouzinii pouzin's star-thistle
- Centaurea solstitialis yellow star-thistle
- Centaurea stoebe spotted knapweed
- Centaurea sulphurea sicilian star-thistle
- Centaurium erythraea european centaury
- Centaurium pulchellum lesser centaury
- Centaurium tenuiflorum slender centaury
- Centranthus ruber red valerian
- Centromadia parryi southern tarplant
- Centromadia parryi congdon's tarplant
- Centromadia parryi pappose tarplant
- Centromadia parryi parry's rough tarplant
- Centromadia pungens smooth tarplant
- Centromadia pungens common spikeweed
- Centrostegia thurberi red triangles
- Cephalanthera austiniae phantom orchid
- Cephalanthus occidentalis california button willow
- Cerastium arvense field mouse-ear chickweed
- Cerastium beeringianum bering mouse-ear chickweed
- Cerastium dichotomum forked mouse-ear chickweed
- Cerastium diffusum dark green mouse-ear chickweed
- Cerastium fontanum common mouse-ear chickweed
- Cerastium glomeratum sticky mouse-ear chickweed
- Cerastium viride western field mouse-ear chickweed
- Cercis occidentalis western redbud
- Cercocarpus betuloides birch-leaf mountain-mahogany
- Cercocarpus betuloides island mountain-mahogany
- Cercocarpus ledifolius curl-leaf mountain-mahogany
- Cercocarpus traskiae catalina island mountain-mahogany
- Chaenactis alpigena sharsmith pincushion
- Chaenactis artemisiifolia white pincushion
- Chaenactis carphoclinia peirson's pincushion
- Chaenactis carphoclinia pebble pincushion
- Chaenactis douglasii alpine dusty-maidens
- Chaenactis douglasii dusty-maidens
- Chaenactis fremontii fremont pincushion
- Chaenactis glabriuscula inner coast range pincushion
- Chaenactis glabriuscula sand buttons
- Chaenactis glabriuscula orcutt's pincushion
- Chaenactis glabriuscula yellow pincushion
- Chaenactis macrantha mojave pincushion
- Chaenactis nevadensis sierra pincushion
- Chaenactis parishii parish's chaenactis
- Chaenactis santolinoides santolina pincushion
- Chaenactis stevioides desert pincushion
- Chaenactis suffrutescens shasta chaenactis
- Chaenactis xantiana fleshy pincushion
- Chaetadelpha wheeleri wheeler's dune-broom
- Chaetopappa ericoides rose-heath
- Chamaebatia australis southern mountain misery
- Chamaebatia foliolosa mountain misery
- Chamaecyparis lawsoniana port orford cedar lawson cypress
- Chamaemelum fuscatum chamomile
- Chamelaucium uncinatum waxflower
- Chamerion angustifolium fireweed
- Chenopodium album lamb's quarters
- Chenopodium berlandieri pitseed goosefoot
- Chenopodium californicum california goosefoot
- Chenopodium capitatum strawberry-blite
- Chenopodium rubrum red pigweed
- Chenopodium simplex large-seeded goosefoot
- Chimaphila menziesii little prince's pine
- Chimaphila umbellata prince's pine
- Chloris gayana rhodes grass
- Chloris truncata black windmill grass
- Chloris verticillata windmill grass
- Chloris virgata feather finger grass
- Chlorogalum grandiflorum red hills soaproot
- Chlorogalum pomeridianum dwarf soaproot
- Chlorogalum purpureum santa lucia purple amole
- Chlorogalum purpureum camatta canyon amole
- Chloropyron maritimum salt marsh bird's-beak
- Chloropyron maritimum point reyes salty bird's-beak
- Chloropyron molle hispid salty bird's-beak
- Chloropyron molle soft salty bird's-beak
- Chloropyron palmatum palmate salty bird's-beak
- Chloropyron tecopense tecopa salty bird's-beak
- Chondrilla juncea skeleton weed
- Chorizanthe angustifolia narrow-leaf spineflower
- Chorizanthe biloba two-lobe spineflower
- Chorizanthe biloba hernandez spineflower
- Chorizanthe blakleyi blakley's spineflower
- Chorizanthe brevicornu brittle spineflower
- Chorizanthe brevicornu great basin brittle spineflower
- Chorizanthe breweri brewer's spineflower
- Chorizanthe clevelandii cleveland's spineflower
- Chorizanthe corrugata wrinkled spineflower
- Chorizanthe cuspidata san francisco bay spineflower
- Chorizanthe cuspidata woolly-headed spineflower
- Chorizanthe diffusa diffuse spineflower
- Chorizanthe douglasii douglas' spineflower
- Chorizanthe fimbriata fringed spineflower
- Chorizanthe fimbriata laciniate spineflower
- Chorizanthe howellii howell's spineflower
- Chorizanthe leptotheca peninsular spineflower
- Chorizanthe membranacea pink spineflower
- Chorizanthe minutiflora fort ord spineflower
- Chorizanthe obovata spoon-sepal spineflower
- Chorizanthe orcuttiana orcutt's spineflower
- Chorizanthe palmeri palmer's spineflower
- Chorizanthe parryi san fernando valley spineflower
- Chorizanthe parryi parry's spineflower
- Chorizanthe polygonoides long-spined spineflower
- Chorizanthe polygonoides knotweed spineflower
- Chorizanthe procumbens prostrate spineflower
- Chorizanthe pungens ben lomond spineflower
- Chorizanthe pungens monterey spineflower
- Chorizanthe rectispina straight-awned spineflower
- Chorizanthe rigida devil's spineflower
- Chorizanthe robusta scotts valley spineflower
- Chorizanthe robusta robust spineflower
- Chorizanthe spinosa mojave spineflower
- Chorizanthe staticoides turkish rugging
- Chorizanthe stellulata starlite spineflower
- Chorizanthe uniaristata one-awn spineflower
- Chorizanthe valida sonoma spineflower
- Chorizanthe ventricosa potbellied spineflower
- Chorizanthe watsonii watson's spineflower
- Chorizanthe wheeleri wheeler's spineflower
- Chorizanthe xanti white-bracted spineflower
- Chorizanthe xanti pinyon spineflower
- Chrysanthemoides monilifera bitou bush
- Chrysolepis chrysophylla giant chinquapin
- Chrysolepis sempervirens bush chinquapin
- Chrysothamnus greenei greene's rabbitbrush
- Chrysothamnus viscidiflorus yellow rabbitbrush
- Chylismia heterochroma shockley's evening-primrose
- Cicendia quadrangularis timwort
- Cicuta maculata bolander's water-hemlock
- Cinna bolanderi bolander's woodreed
- Cinna latifolia drooping woodreed slender woodreed
- Cinnamomum camphora camphor tree
- Cirsium andrewsii franciscan thistle
- Cirsium arizonicum arizona thistle
- Cirsium arizonicum desert mountain thistle
- Cirsium arvense canada thistle
- Cirsium canescens prairie thistle
- Cirsium ciliolatum ashland thistle
- Cirsium crassicaule slough thistle
- Cirsium cymosum gray-green thistle
- Cirsium cymosum peregrine thistle
- Cirsium douglasii swamp thistle
- Cirsium fontinale mount hamilton fountain thistle
- Cirsium fontinale crystal springs fountain thistle
- Cirsium fontinale san luis obispo fountain thistle
- Cirsium fontinale fountain thistle
- Cirsium hydrophilum suisun thistle
- Cirsium hydrophilum mount tamalpais thistle
- Cirsium inamoenum greene's thistle
- Cirsium mohavense mojave thistle
- Cirsium neomexicanum desert thistle
- Cirsium occidentale california thistle
- Cirsium occidentale snowy thistle
- Cirsium occidentale compact cobwebby thistle
- Cirsium occidentale coulter's thistle
- Cirsium occidentale cuesta ridge thistle
- Cirsium occidentale cobwebby thistle
- Cirsium occidentale venus thistle
- Cirsium ochrocentrum yellowspine thistle
- Cirsium praeteriens lost thistle
- Cirsium quercetorum brownie thistle
- Cirsium remotifolium pacific fringed thistle
- Cirsium remotifolium remote-leaved thistle
- Cirsium remotifolium klamath thistle
- Cirsium rhothophilum surf thistle
- Cirsium scariosum dinnerplate thistle
- Cirsium scariosum southern meadow thistle
- Cirsium scariosum rosette thistle
- Cirsium scariosum la graciosa thistle
- Cirsium scariosum shasta valley thistle
- Cirsium scariosum elk thistle
- Cirsium scariosum meadow thistle
- Cirsium undulatum wavyleaf thistle
- Cirsium vulgare bull thistle
- Cissus antarctica kangaroo ivy
- Cistanthe ambigua desert cistanthe
- Cistanthe maritima seaside cistanthe
- Cistus ladanifer gum cistus
- Citrullus lanatus wild watermelon
- Cladium californicum california sawgrass
- Clarkia amoena whitney's farewell-to-spring
- Clarkia amoena farewell-to-spring
- Clarkia australis small's southern clarkia
- Clarkia biloba mariposa clarkia
- Clarkia biloba brandegee's clarkia
- Clarkia borealis shasta clarkia
- Clarkia borealis northern clarkia
- Clarkia bottae punchbowl godetia
- Clarkia breweri brewer's clarkia
- Clarkia concinna santa clara red ribbons
- Clarkia concinna raiche's red ribbons
- Clarkia concinna red ribbons
- Clarkia delicata delicate clarkia
- Clarkia exilis slender clarkia
- Clarkia franciscana presidio clarkia
- Clarkia gracilis white-stemmed clarkia
- Clarkia gracilis tracy's clarkia
- Clarkia imbricata vine hill clarkia
- Clarkia jolonensis jolon clarkia
- Clarkia lewisii lewis' clarkia
- Clarkia lingulata merced clarkia
- Clarkia mildrediae golden-anthered clarkia
- Clarkia mildrediae mildred's clarkia
- Clarkia mosquinii mosquin's clarkia
- Clarkia purpurea four-spot
- Clarkia rostrata beaked clarkia
- Clarkia speciosa pismo clarkia
- Clarkia springvillensis springville clarkia
- Clarkia tembloriensis vasek's clarkia
- Clarkia virgata sierra clarkia
- Clarkia xantiana kern canyon clarkia
- Claytonia lanceolata western spring beauty
- Claytonia megarhiza fell-fields claytonia
- Claytonia palustris marsh claytonia
- Claytonia parviflora streambank spring beauty
- Claytonia perfoliata miner's lettuce
- Claytonia sibirica candy flower
- Claytonia umbellata great basin claytonia
- Clematis lasiantha chaparral clematis pipestem clematis
- Clematis ligusticifolia western virgin's bower
- Clematis pauciflora southern california clematis few-flowered clematis
- Cleomella brevipes short-pedicelled cleomella
- Cleomella hillmanii hillman's cleomella
- Cleomella obtusifolia mojave stinkweed
- Clinopodium chandleri san miguel savory
- Clinopodium douglasii yerba buena
- Clinopodium mimuloides monkey-flower savory
- Cneoridium dumosum bushrue
- Cochlearia groenlandica greenland cochlearia
- Coincya monensis star mustard
- Collinsia antonina san antonio collinsia
- Collinsia corymbosa round-headed chinese-houses
- Collinsia heterophylla downy chinese-houses
- Collinsia heterophylla chinese-houses
- Collinsia multicolor san francisco collinsia
- Collinsia parviflora blue-eyed mary
- Collomia diversifolia serpentine collomia
- Collomia grandiflora large-flowered collomia
- Collomia heterophylla variable-leaf collomia
- Collomia larsenii talus collomia
- Collomia linearis narrow-leaf mountain trumpet
- Collomia rawsoniana rawson's flaming-trumpet
- Collomia tenella slender collomia
- Collomia tinctoria staining collomia
- Collomia tracyi tracy's collomia
- Colubrina californica las animas colubrina
- Comarostaphylis diversifolia summer holly
- Comarum palustre marsh cinquefoil
- Comastoma tenellum samiland gentian
- Commelina benghalensis tropical spiderwort
- Condalia globosa spiny abrojo
- Condea emoryi desert lavender
- Conicosia pugioniformis narrowleaf iceplant
- Constancea nevinii nevin's woolly sunflower
- Convolvulus arvensis bindweed orchard morning-glory
- Convolvulus simulans small-flowered morning-glory
- Coprosma repens mirror bush
- Coptis laciniata oregon goldthread
- Corallorhiza maculata spotted coralroot
- Corallorhiza mertensiana western coralroot
- Corallorhiza striata striped coralroot
- Corallorhiza trifida northern coralroot
- Cordylanthus capitatus yakima bird's-beak
- Cordylanthus eremicus desert bird's-beak
- Cordylanthus eremicus kern plateau bird's-beak
- Cordylanthus nidularius mount diablo bird's-beak
- Cordylanthus parviflorus small-flowered bird's-beak
- Cordylanthus rigidus short-bracted bird's-beak
- Cordylanthus rigidus seaside bird's-beak
- Cordylanthus tenuis fresno county bird's-beak
- Cordylanthus tenuis serpentine bird's-beak
- Cordylanthus tenuis pennell's bird's-beak
- Cordylanthus tenuis pallid bird's-beak
- Cordyline australis new zealand cabbage tree
- Coreopsis lanceolata garden coreopsis
- Coreopsis tinctoria calliopsis
- Coriandrum sativum coriander cilantro
- Corispermum americanum american bugseed
- Cornus canadensis bunchberry
- Cornus glabrata brown dogwood
- Cornus nuttallii mountain dogwood
- Cornus sericea american dogwood
- Coronilla varia crown vetch
- Cortaderia jubata purple pampas grass jubata grass
- Cortaderia selloana pampas grass
- Corydalis aurea golden corydalis
- Corydalis caseana sierra corydalis fitweed
- Corylus cornuta california hazel
- Coryphantha alversonii foxtail cactus
- Coryphantha chlorantha desert pincushion
- Coryphantha vivipara viviparous foxtail cactus
- Cosmos bipinnatus garden cosmos
- Cota tinctoria golden marguerite
- Cotoneaster franchetii franchet's cotoneaster
- Cotoneaster frigidus tree cotoneaster
- Cotoneaster hodjingensis earthquake cotoneaster
- Cotoneaster horizontalis wall or herringbone cotoneaster
- Cotoneaster integrifolius entire-leaved cotoneaster
- Cotoneaster lacteus late cotoneaster
- Cotoneaster pannosus silverleaf cotoneaster
- Cotoneaster simonsii himalayan cotoneaster
- Cotula australis australian cotula
- Cotula coronopifolia brass-buttons
- Crassula connata pygmy-weed
- Crassula multicava fairy crassula
- Crassula ovata jade plant
- Crassula tetragona miniature or chinese pine-tree
- Crepis runcinata hall's meadow hawksbeard
- Cressa truxillensis alkali weed
- Crocanthemum aldersonii alderson's rush-rose
- Crocanthemum greenei island rush-rose
- Crocanthemum scoparium peak rush-rose
- Crocanthemum suffrutescens bisbee peak rush-rose
- Crossosoma californicum catalina crossosoma
- Croton setiger turkey-mullein
- Croton wigginsii wiggins' croton
- Crupina vulgaris bearded creeper
- Crypsis alopecuroides foxtail prickle grass
- Crypsis schoenoides swamp prickle grass
- Crypsis vaginiflora modest prickle grass
- Cryptantha affinis side-grooved cryptantha
- Cryptantha ambigua wilkes' cryptantha
- Cryptantha angustifolia narrow-leaved cryptantha
- Cryptantha barbigera bearded cryptantha
- Cryptantha barbigera palm springs cryptantha
- Cryptantha celosioides cocks-comb cat's-eye
- Cryptantha cinerea bow-nut cryptantha
- Cryptantha circumscissa cushion cryptantha
- Cryptantha circumscissa rosette cushion cryptantha
- Cryptantha clevelandii cleveland's cryptantha
- Cryptantha clevelandii coastal cryptantha
- Cryptantha clokeyi clokey's cryptantha
- Cryptantha confertiflora yellow-flowered cryptantha
- Cryptantha corollata coast range cryptantha
- Cryptantha costata ribbed cryptantha
- Cryptantha crinita silky cryptantha
- Cryptantha crymophila subalpine cryptantha
- Cryptantha decipiens gravel cryptantha
- Cryptantha dissita lake cryptantha
- Cryptantha dumetorum scrambling cryptantha
- Cryptantha echinella hedgehog cryptantha
- Cryptantha excavata deep-scarred cryptantha
- Cryptantha fendleri sand dune cryptantha
- Cryptantha flaccida weak-stemmed or pale cryptantha
- Cryptantha flavoculata yellow-eyed cryptantha
- Cryptantha ganderi gander's cryptantha
- Cryptantha glomeriflora clustered-flower cryptantha
- Cryptantha gracilis slender cryptantha
- Cryptantha hispidula napa cryptantha
- Cryptantha hoffmannii white mountains cryptantha
- Cryptantha holoptera winged cryptantha
- Cryptantha hooveri hoover's cryptantha
- Cryptantha humilis low cryptantha
- Cryptantha inaequata panamint cryptantha
- Cryptantha incana tulare cryptantha
- Cryptantha intermedia henderson's cryptantha
- Cryptantha leiocarpa beach cryptantha
- Cryptantha mariposae mariposa cryptantha
- Cryptantha maritima guadalupe cryptantha
- Cryptantha micrantha mountain red-root cryptantha
- Cryptantha micrantha red-root cryptantha
- Cryptantha micromeres minute-flowered cryptantha
- Cryptantha microstachys tejon cryptantha
- Cryptantha milobakeri milo baker's cryptantha
- Cryptantha mohavensis mojave cryptantha
- Cryptantha muricata prickly-nut cryptantha
- Cryptantha muricata jones' cryptantha
- Cryptantha muricata showy prickly-nut cryptantha
- Cryptantha nemaclada colusa cryptantha
- Cryptantha nevadensis nevada cryptantha
- Cryptantha nevadensis rigid cryptantha
- Cryptantha nubigena sierra cryptantha
- Cryptantha oxygona sharp-nut cryptantha
- Cryptantha pterocarya tucson cryptantha
- Cryptantha pterocarya winged-nut cryptantha
- Cryptantha pterocarya purpus' cryptantha
- Cryptantha racemosa shrubby cryptantha
- Cryptantha rattanii rattan's cryptantha
- Cryptantha recurvata curved-nut cryptantha
- Cryptantha roosiorum bristlecone cryptantha
- Cryptantha rostellata red-stemmed cryptantha
- Cryptantha schoolcraftii schoolcraft's cryptantha
- Cryptantha scoparia gray cryptantha
- Cryptantha similis dome cryptantha
- Cryptantha simulans pine cryptantha
- Cryptantha sparsiflora few-flowered cryptantha
- Cryptantha subretusa crater lake cryptantha
- Cryptantha torreyana dwarf cryptantha
- Cryptantha torreyana torrey's cryptantha
- Cryptantha traskiae trask's cryptantha
- Cryptantha tumulosa new york mountains cryptantha
- Cryptantha utahensis scented cryptantha
- Cryptantha virginensis virgin river cryptantha
- Cryptantha watsonii watson's cryptantha
- Cryptogramma acrostichoides american parsley fern
- Cryptogramma cascadensis cascade parsley fern
- Cucumis melo dudaim melon
- Cucumis myriocarpus paddy melon
- Cucurbita digitata finger-leaved gourd
- Cucurbita foetidissima buffalo gourd calabazilla
- Cucurbita palmata coyote melon
- Cucurbita pepo calabaza field pumpkin
- Cuscuta approximata alfalfa dodder
- Cuscuta californica chaparral dodder
- Cuscuta campestris field dodder
- Cuscuta cephalanthi buttonbush dodder
- Cuscuta denticulata small-tooth dodder
- Cuscuta howelliana boggs lake dodder
- Cuscuta indecora large-seeded dodder
- Cuscuta japonica japanese dodder
- Cuscuta pacifica goldenthread
- Cuscuta reflexa giant dodder
- Cuscuta salina salt dodder
- Cuscuta suaveolens fringed dodder
- Cuscuta suksdorfii mountain dodder
- Cusickiella quadricostata bodie hills cusickiella
- Cylindropuntia acanthocarpa buckhorn cholla
- Cylindropuntia bigelovii teddy-bear cholla
- Cylindropuntia californica snake cholla
- Cylindropuntia californica cane or valley cholla
- Cylindropuntia chuckwallensis chuckwalla cholla
- Cylindropuntia echinocarpa silver or golden cholla
- Cylindropuntia fosbergii fosberg's or mason valley cholla
- Cylindropuntia ganderi gander's cholla
- Cylindropuntia munzii munz's cholla
- Cylindropuntia prolifera coast cholla
- Cylindropuntia ramosissima diamond cholla pencil cactus
- Cylindropuntia wolfii wolf's cholla
- Cymbalaria muralis kenilworth ivy
- Cymopterus deserticola desert cymopterus
- Cymopterus gilmanii gilman's cymopterus
- Cymopterus globosus globose cymopterus
- Cymopterus multinervatus purple-nerve cymopterus
- Cymopterus ripleyi ripley's cymopterus
- Cynara cardunculus artichoke
- Cynodon dactylon bermuda grass
- Cynoglossum grande grand hound's tongue
- Cynoglossum occidentale western hound's tongue
- Cynoglossum officinale common hound's tongue
- Cynosurus cristatus crested dogtail grass
- Cynosurus echinatus bristly dogtail grass
- Cyperus rotundus purple nutsedge
- Cyperus strigosus false nutsedge
- Cypripedium californicum california lady's-slipper
- Cypripedium fasciculatum clustered lady's-slipper
- Cypripedium montanum mountain lady's-slipper
- Cypripedium parviflorum northern small yellow lady's-slipper
- Cytisus multiflorus spanish or portuguese broom
- Cytisus proliferus tree lucerne
- Cytisus scoparius scotch broom
- Dactyloctenium aegyptium durban crowfoot
- Dalea ornata ornate dalea
- Danthonia californica california oat grass
- Danthonia decumbens mountain heath grass
- Danthonia intermedia intermediate oat grass
- Danthonia unispicata one-spike oat grass
- Dasiphora fruticosa shrubby cinquefoil
- Datisca glomerata durango root
- Daucus carota carrot queen anne's lace
- Dedeckera eurekensis july gold
- Deinandra arida red rock tarplant
- Deinandra bacigalupii livermore tarplant
- Deinandra clementina island tarplant
- Deinandra conjugens otay tarplant
- Deinandra floribunda tecate tarplant
- Deinandra halliana hall's tarplant
- Deinandra increscens gaviota tarplant
- Deinandra minthornii santa susana tarplant
- Deinandra mohavensis mojave tarplant
- Deinandra paniculata paniculate tarplant
- Delphinium andersonii anderson's larkspur
- Delphinium antoninum anthony peak larkspur
- Delphinium bakeri baker's larkspur
- Delphinium californicum coast or california larkspur
- Delphinium californicum hospital canyon larkspur
- Delphinium cardinale cardinal or scarlet larkspur
- Delphinium decorum coast larkspur
- Delphinium decorum tracy's larkspur
- Delphinium depauperatum dwarf blue mountain or mountain larkspur
- Delphinium glaucum mountain giant or tall larkspur
- Delphinium gracilentum slender or greene's larkspur
- Delphinium gypsophilum gypsum-loving larkspur
- Delphinium hansenii ewan's larkspur
- Delphinium hansenii hansen's larkspur
- Delphinium hansenii kern county larkspur
- Delphinium hesperium cuyamaca larkspur
- Delphinium hesperium western larkspur
- Delphinium hesperium pale-flowered western larkspur
- Delphinium hutchinsoniae hutchinson's larkspur
- Delphinium inopinum unexpected larkspur
- Delphinium luteum golden larkspur
- Delphinium nudicaule red or orange larkspur
- Delphinium nuttallianum dwarf meadow slim or sonne's larkspur
- Delphinium parishii pale-flowered parish's larkspur
- Delphinium parishii parish's desert sky blue or mojave larkspur
- Delphinium parishii colorado desert larkspur
- Delphinium parryi dune larkspur
- Delphinium parryi eastwood's larkspur
- Delphinium parryi maritime larkspur
- Delphinium parryi parry's larkspur
- Delphinium parryi mount pinos larkspur
- Delphinium patens spreading or zigzag larkspur
- Delphinium polycladon high mountain larkspur
- Delphinium purpusii rose-flowered larkspur
- Delphinium recurvatum recurved larkspur
- Delphinium scaposum bare-stem larkspur
- Delphinium stachydeum spiked larkspur
- Delphinium trolliifolium cow poison poison larkspur
- Delphinium uliginosum swamp larkspur
- Delphinium umbraculorum umbrella larkspur
- Delphinium variegatum san clemente island larkspur
- Delphinium variegatum thorne's royal larkspur
- Delphinium variegatum royal larkspur
- Dendromecon harfordii channel island tree poppy
- Dendromecon rigida bush poppy
- Deschampsia cespitosa tufted hair grass
- Deschampsia danthonioides annual hair grass
- Deschampsia elongata slender hair grass
- Dianthus armeria grass pink deptford pink
- Dianthus barbatus sweet-william
- Dianthus deltoides maiden pink meadow pink
- Dianthus plumarius garden or cottage pink
- Dicentra formosa pacific bleeding heart
- Dicentra nevadensis tulare county bleeding heart
- Dicentra uniflora steer's head
- Dichelostemma capitatum blue dicks
- Dichelostemma congestum fork-toothed ookow
- Dichelostemma ida-maia firecracker flower
- Dichelostemma multiflorum wild hyacinth
- Dichelostemma volubile twining brodiaea snake lily
- Dichondra occidentalis western dichondra
- Dicranostegia orcuttiana orcutt's bird's-beak baja bird's-beak
- Dieteria asteroides mount laguna aster
- Dieteria canescens ziegler's aster
- Dieteria canescens hoary-aster
- Digitaria californica arizona cottontop
- Digitaria ciliaris southern crab grass
- Digitaria ischaemum smooth crab grass
- Digitaria sanguinalis hairy crab grass
- Dimeresia howellii doublet
- Dimorphotheca ecklonis blue & white daisybush
- Dimorphotheca fruticosa trailing african daisy
- Dimorphotheca sinuata namaqualand daisy
- Diodia teres rough buttonweed poor joe
- Dipsacus fullonum wild teasel
- Dipsacus sativus fuller's teasel
- Dirca occidentalis western leatherwood
- Dissanthelium californicum california dissanthelium
- Distichlis littoralis shore grass
- Distichlis spicata salt grass
- Ditaxis claryana glandular ditaxis
- Ditaxis serrata california ditaxis
- Dithyrea maritima beach spectaclepod
- Dittrichia graveolens stinkwort
- Dittrichia viscosa false yellowhead
- Dodecahema leptoceras slender-horned spineflower
- Downingia concolor cuyamaca lake downingia
- Downingia laeta great basin downingia
- Downingia pusilla dwarf downingia
- Draba aureola golden alpine draba
- Draba californica california draba
- Draba cana canescent draba
- Draba carnosula mount eddy draba
- Draba cruciata mineral king draba
- Draba howellii howell's draba
- Draba incrassata sweetwater mountains draba
- Draba lonchocarpa spear-fruited draba
- Draba monoensis white mountains draba
- Draba praealta tall draba
- Draba pterosperma winged-seed draba
- Draba saxosa southern california rock draba
- Draba sharsmithii mount whitney draba
- Draba sierrae sierra draba
- Draba subumbellata mound draba
- Drosera anglica english sundew
- Drosera rotundifolia round-leaved sundew
- Drymocallis cuneifolia wedgeleaf woodbeauty
- Drymocallis cuneifolia ewan's woodbeauty
- Drymocallis hansenii yosemite woodbeauty
- Drymocallis lactea austin's woodbeauty
- Drymocallis lactea sierran woodbeauty
- Drymocallis pseudorupestris crum's woodbeauty
- Drymocallis pseudorupestris cliff woodbeauty
- Dryopteris filix-mas male fern
- Duchesnea indica mock-strawberry
- Dudleya abramsii san bernardino mountains dudleya
- Dudleya abramsii betty's dudleya
- Dudleya abramsii limestone dudleya
- Dudleya abramsii mouse-gray dudleya
- Dudleya abramsii santa clara valley dudleya
- Dudleya blochmaniae blochman's dudleya
- Dudleya blochmaniae santa rosa island dudleya
- Dudleya brevifolia shortleaved dudleya
- Dudleya candelabrum candleholder dudleya
- Dudleya cymosa agoura hills dudleya
- Dudleya cymosa pierpoint springs dudleya
- Dudleya cymosa san gabriel river dudleya
- Dudleya cymosa marcescent dudleya
- Dudleya cymosa santa monica dudleya
- Dudleya densiflora san gabriel mountains dudleya
- Dudleya farinosa bluff lettuce
- Dudleya gnoma munchkin dudleya
- Dudleya greenei greene's dudleya
- Dudleya lanceolata lance-leaved dudleya
- Dudleya multicaulis many-stemmed dudleya
- Dudleya nesiotica santa cruz island dudleya
- Dudleya palmeri palmer's dudleya
- Dudleya parva conejo dudleya
- Dudleya pulverulenta chalk dudleya
- Dudleya saxosa panamint dudleya
- Dudleya stolonifera laguna beach dudleya
- Dudleya traskiae santa barbara island dudleya
- Dudleya variegata variegated dudleya
- Dudleya verityi verity's dudleya
- Dudleya virens island green dudleya
- Dudleya virens bright green dudleya
- Dudleya viscida sticky dudleya
- Dulichium arundinaceum three-way sedge
- Dysphania ambrosioides mexican tea
- Dysphania anthelmintica wormseed
- Dysphania botrys jerusalem oak
- Dyssodia papposa dogweed
- Echium candicans pride of madeira
- Echium pininana tower of jewels
- Echium plantagineum salvation jane
- Eclipta prostrata false daisy
- Ehrendorferia chrysantha golden eardrops
- Ehrendorferia ochroleuca white eardrops
- Ehrharta calycina perennial veldt grass
- Ehrharta erecta panic veldt grass
- Ehrharta longiflora long-flowered veldt grass annual veldt grass
- Elaeagnus angustifolia russian olive
- Eleocharis acicularis needle spikerush
- Eleocharis parvula small spikerush
- Eleocharis quadrangulata squarestem spikerush
- Eleocharis torticulmis california twisted spikerush
- Eleusine coracana african finger millet
- Eleusine indica goose grass india goose grass
- Eleusine tristachya three-spiked goose grass
- Elodea bifoliata two-leaf waterweed
- Elodea canadensis common waterweed
- Elodea nuttallii nuttall's waterweed
- Elymus californicus california bottle-brush grass
- Elymus caput-medusae medusa head
- Elymus cinereus great basin wild-rye
- Elymus condensatus giant wild-rye
- Elymus elymoides squirreltail
- Elymus glaucus blue or western wild-rye
- Elymus lanceolatus thick-spike wheat grass
- Elymus mollis american dune grass sea lyme grass
- Elymus multisetus big squirreltail
- Elymus pacificus pacific wild-rye
- Elymus ponticus tall wheat grass
- Elymus repens quack grass
- Elymus salina salina pass wild-rye
- Elymus scribneri scribner's wheat grass
- Elymus smithii western wheat grass
- Elymus spicatus blue bunch wheat grass
- Elymus stebbinsii stebbins' wheat grass
- Elymus trachycaulus slender wheat grass
- Elymus triticoides beardless wild rye
- Emex australis southern three-cornered jack
- Emex spinosa devil's thorn
- Emmenanthe penduliflora whispering bells
- Empetrum nigrum black crowberry
- Encelia farinosa brittlebush
- Enceliopsis covillei panamint daisy
- Enceliopsis nudicaulis naked-stemmed daisy
- Enemion occidentale western rue-anemone
- Enemion stipitatum siskiyou rue-anemone
- Enneapogon desvauxii nine-awned pappus grass
- Ephedra aspera boundary ephedra
- Ephedra californica desert tea
- Ephedra funerea death valley ephedra
- Ephedra nevadensis nevada ephedra
- Ephedra trifurca longleaf ephedra
- Ephedra viridis green ephedra
- Epilobium canum california fuchsia zauschneria
- Epilobium howellii subalpine fireweed
- Epilobium luteum yellow willowherb
- Epilobium nivium snow mountain willowherb
- Epilobium oreganum oregon fireweed
- Epilobium palustre marsh willowherb
- Epilobium rigidum siskiyou mountains willowherb
- Epilobium septentrionale humboldt county fuchsia
- Epilobium siskiyouense siskiyou fireweed
- Epipactis gigantea stream orchid
- Epipactis helleborine broad-leaved helleborine
- Equisetum ×ferrissii ferriss' horsetail
- Equisetum arvense common horsetail
- Equisetum hyemale common scouring rush
- Equisetum laevigatum smooth scouring rush
- Equisetum palustre marsh horsetail
- Equisetum telmateia giant horsetail
- Eragrostis barrelieri mediterranean love grass
- Eragrostis cilianensis stink grass
- Eragrostis curvula weeping love grass
- Eragrostis hypnoides creeping love grass
- Eragrostis lehmanniana lehmann's love grass
- Eragrostis lutescens six-weeks love grass
- Eragrostis mexicana mexican love grass
- Eragrostis mexicana chilean love grass
- Eragrostis minor little love grass
- Eragrostis pectinacea gulf love grass
- Eragrostis pectinacea carolina love grass
- Eremalche exilis white mallow
- Eremalche parryi kern mallow
- Eremalche parryi parry's mallow
- Eremalche rotundifolia desert fivespot
- Eremogone aculeata prickly sandwort
- Eremogone cliftonii clifton's eremogone clifton's sandwort
- Eremogone congesta charleston sandwort
- Eremogone congesta suffrutescent sandwort
- Eremogone congesta ballhead sandwort
- Eremogone ferrisiae ferris' sandwort
- Eremogone kingii king's sandwort
- Eremogone macradenia mojave or desert sandwort
- Eremogone ursina bear valley sandwort
- Eremothera boothii pine creek evening-primrose
- Eremothera boothii booth's evening-primrose
- Eremothera boothii shredding evening-primrose
- Eremothera boothii booth's hairy evening-primrose
- Eremothera minor nelson's evening-primrose
- Eriastrum brandegeeae brandegee's eriastrum
- Eriastrum densifolium santa ana river woollystar
- Eriastrum hooveri hoover's eriastrum
- Eriastrum luteum yellow-flowered eriastrum
- Eriastrum pluriflorum many-flowered eriastrum
- Eriastrum tracyi tracy's eriastrum
- Eriastrum virgatum virgate eriastrum
- Ericameria albida white-flowered rabbitbrush
- Ericameria arborescens golden-fleece
- Ericameria bloomeri bloomer's goldenbush
- Ericameria brachylepis boundary goldenbush
- Ericameria cooperi cooper's goldenbush
- Ericameria cuneata cliff goldenbush
- Ericameria cuneata laguna mountains goldenbush
- Ericameria cuneata wedgeleaf goldenbush
- Ericameria discoidea whitestem goldenbush
- Ericameria ericoides mock heather california goldenbush
- Ericameria fasciculata eastwood's goldenbush
- Ericameria gilmanii gilman's goldenbush
- Ericameria greenei greene's goldenbush
- Ericameria laricifolia turpentine-brush
- Ericameria linearifolia interior goldenbush
- Ericameria nana dwarf goldenbush
- Ericameria nauseosa bernardina rabbitbrush
- Ericameria nauseosa desert rabbitbrush
- Ericameria nauseosa white rabbitbrush
- Ericameria nauseosa smooth-fruit rabbitbrush
- Ericameria nauseosa mojave rabbitbrush
- Ericameria nauseosa great basin rabbitbrush
- Ericameria nauseosa showy rabbitbrush
- Ericameria nauseosa washoe rabbitbrush
- Ericameria nauseosa rubber rabbitbrush
- Ericameria ophitidis serpentine goldenbush
- Ericameria palmeri thickbracted goldenbush
- Ericameria palmeri palmer's goldenbush
- Ericameria paniculata black-banded rabbitbrush
- Ericameria parishii parish's goldenbush
- Ericameria parryi rough rabbitbrush
- Ericameria parryi low rabbitbrush
- Ericameria parryi wideleaf rabbitbrush
- Ericameria parryi one-headed rabbitbrush
- Ericameria parryi nevada rabbitbrush
- Ericameria parryi vulcan rabbitbrush
- Ericameria parryi parry's goldenbush
- Ericameria pinifolia pine-bush
- Ericameria suffruticosa singlehead goldenbush
- Ericameria teretifolia green or round-leaf rabbitbrush
- Erigeron aequifolius hall's daisy
- Erigeron algidus sierra fleabane
- Erigeron aliceae alice eastwood's fleabane
- Erigeron annuus annual fleabane
- Erigeron aphanactis rayless shaggy fleabane
- Erigeron argentatus silver fleabane
- Erigeron barbellulatus shining fleabane
- Erigeron biolettii streamside daisy
- Erigeron blochmaniae blochman's leafy daisy
- Erigeron bloomeri waldo daisy
- Erigeron bloomeri bloomer's fleabane
- Erigeron bonariensis flax-leaved horseweed
- Erigeron breweri san jacinto mountains daisy
- Erigeron breweri brewer's fleabane
- Erigeron calvus bald daisy
- Erigeron canadensis horseweed
- Erigeron cervinus siskiyou daisy
- Erigeron chrysopsidis dwarf yellow fleabane
- Erigeron clokeyi pinzl's fleabane
- Erigeron compactus compact daisy
- Erigeron compositus cut-leaf fleabane
- Erigeron concinnus navajo fleabane
- Erigeron coulteri coulter's fleabane
- Erigeron divergens spreading fleabane
- Erigeron eatonii nevada daisy
- Erigeron eatonii eaton's fleabane
- Erigeron elegantulus volcanic daisy
- Erigeron elmeri elmer's fleabane
- Erigeron filifolius thread-leaf fleabane
- Erigeron flagellaris trailing fleabane
- Erigeron foliosus leafy fleabane
- Erigeron glacialis subalpine fleabane
- Erigeron glaucus seaside daisy
- Erigeron greenei greene's narrow-leaved daisy
- Erigeron inornatus hot rock daisy
- Erigeron inornatus keil's daisy
- Erigeron inornatus western rayless fleabane
- Erigeron karvinskianus santa barbara daisy
- Erigeron klamathensis klamath fleabane
- Erigeron lassenianus lassen fleabane
- Erigeron linearis desert yellow fleabane
- Erigeron lonchophyllus short-rayed fleabane
- Erigeron maniopotamicus mad river fleabane daisy
- Erigeron mariposanus mariposa daisy
- Erigeron miser starved daisy
- Erigeron multiceps kern river daisy
- Erigeron nivalis snow fleabane daisy
- Erigeron oxyphyllus wand-like fleabane daisy
- Erigeron parishii parish's daisy
- Erigeron petrophilus northern sierra daisy
- Erigeron petrophilus klamath rock daisy
- Erigeron petrophilus rock-loving fleabane
- Erigeron philadelphicus philadelphia fleabane
- Erigeron pumilus shaggy fleabane
- Erigeron pygmaeus pygmy fleabane
- Erigeron reductus california rayless daisy
- Erigeron reductus little rayless fleabane
- Erigeron robustior robust daisy
- Erigeron sanctarum saints' daisy
- Erigeron serpentinus serpentine daisy
- Erigeron strigosus prairie fleabane
- Erigeron sumatrensis tropical horseweed
- Erigeron supplex supple daisy
- Erigeron tener thin daisy
- Erigeron uncialis limestone daisy
- Erigeron utahensis utah daisy
- Erigeron vagus rambling fleabane
- Eriochloa acuminata southwestern cup grass summer grass
- Eriochloa aristata awned cup grass
- Eriochloa contracta prairie cup grass
- Eriodictyon altissimum indian knob mountainbalm
- Eriodictyon angustifolium narrow-leaved yerba santa
- Eriodictyon californicum california yerba santa
- Eriodictyon capitatum lompoc yerba santa
- Eriodictyon crassifolium thick-leaved yerba santa
- Eriodictyon crassifolium bicolored yerba santa
- Eriodictyon lobbii matted yerba santa
- Eriodictyon parryi poodle-dog bush
- Eriodictyon tomentosum woolly yerba santa
- Eriodictyon traskiae smith's yerba santa
- Eriodictyon traskiae trask's yerba santa
- Eriodictyon trichocalyx san diego yerba santa
- Eriodictyon trichocalyx hairy yerba santa
- Eriogonum alpinum trinity buckwheat (group 3)
- Eriogonum ampullaceum mono wild buckwheat (group 1)
- Eriogonum angulosum angle-stem wild buckwheat (group 2)
- Eriogonum apiculatum san jacinto wild buckwheat (group 2)
- Eriogonum apricum ione buckwheat
- Eriogonum apricum irish hill buckwheat
- Eriogonum arborescens santa cruz island wild buckwheat (group 4)
- Eriogonum argillosum clay buckwheat (group 1)
- Eriogonum baileyi bailey's wild buckwheat
- Eriogonum baileyi bailey's woolly buckwheat
- Eriogonum bifurcatum forked buckwheat (group 2)
- Eriogonum brachyanthum short-flower wild buckwheat (group 1)
- Eriogonum brachypodum parry's wild buckwheat (group 2)
- Eriogonum breedlovei breedlove's buckwheat
- Eriogonum breedlovei the needles buckwheat
- Eriogonum butterworthianum butterworth's buckwheat (group 4)
- Eriogonum caespitosum matted wild buckwheat (group 3)
- Eriogonum callistum tehachapi buckwheat (group 4)
- Eriogonum cedrorum the cedars buckwheat (group 3)
- Eriogonum cernuum nodding wild buckwheat (group 2)
- Eriogonum cinereum coastal wild buckwheat (group 4)
- Eriogonum cithariforme santa ynez wild buckwheat
- Eriogonum cithariforme cithara wild buckwheat
- Eriogonum clavatum hoover's desert trumpet (group 2)
- Eriogonum collinum hill buckwheat (group 2)
- Eriogonum compositum arrow-leaf wild buckwheat (group 3)
- Eriogonum congdonii congdon's buckwheat (group 3)
- Eriogonum contiguum reveal's buckwheat (group 2)
- Eriogonum covilleanum coville's wild buckwheat (group 1)
- Eriogonum crocatum conejo buckwheat (group 4)
- Eriogonum dasyanthemum chaparral wild buckwheat (group 1)
- Eriogonum davidsonii davidson's wild buckwheat (group 1)
- Eriogonum deflexum tall skeleton weed
- Eriogonum deflexum flat-topped skeleton weed
- Eriogonum deflexum nevada skeleton weed
- Eriogonum deflexum skeleton weed (group 2)
- Eriogonum deserticola colorado desert wild buckwheat (group 4)
- Eriogonum diclinum jaynes canyon buckwheat (group 3)
- Eriogonum douglasii southern wild buckwheat (group 3)
- Eriogonum eastwoodianum eastwood's buckwheat (group 1)
- Eriogonum elatum tall wild buckwheat
- Eriogonum elatum tall woolly wild buckwheat
- Eriogonum elegans elegant wild buckwheat (group 1)
- Eriogonum elongatum long-stem wild buckwheat (group 4)
- Eriogonum eremicola wildrose canyon buckwheat (group 2)
- Eriogonum esmeraldense esmeralda wild buckwheat (group 2)
- Eriogonum evanidum vanishing wild buckwheat (group 1)
- Eriogonum exaltatum ladder wild buckwheat (group 2)
- Eriogonum fasciculatum coastal california buckwheat
- Eriogonum fasciculatum sonoran desert california buckwheat
- Eriogonum fasciculatum leafy california buckwheat
- Eriogonum fasciculatum mojave desert california buckwheat
- Eriogonum fasciculatum california buckwheat (group 4)
- Eriogonum giganteum santa barbara island buckwheat
- Eriogonum giganteum san clemente island buckwheat
- Eriogonum giganteum santa catalina island buckwheat
- Eriogonum giganteum st. catherine's-lace (group 4)
- Eriogonum gilmanii gilman's buckwheat (group 4)
- Eriogonum glandulosum glandular wild buckwheat (group 2)
- Eriogonum gossypinum cottony buckwheat (group 2)
- Eriogonum gracile slender woolly wild buckwheat
- Eriogonum gracile palomar mountain wild buckwheat
- Eriogonum gracilipes white mountains wild buckwheat (group 4)
- Eriogonum gracillimum rose-and-white wild buckwheat (group 2)
- Eriogonum grande island buckwheat
- Eriogonum grande red-flowered buckwheat
- Eriogonum grande san nicolas island buckwheat
- Eriogonum heermannii heermann's rough wild buckwheat
- Eriogonum heermannii clark mountain buckwheat
- Eriogonum heermannii heermann's wild buckwheat
- Eriogonum heermannii heermann's great basin wild buckwheat
- Eriogonum heermannii western heermann's buckwheat
- Eriogonum heermannii heermann's grooved wild buckwheat
- Eriogonum heracleoides parsnip-flowered buckwheat (group 3)
- Eriogonum hirtellum klamath mountain buckwheat (group 3)
- Eriogonum hirtiflorum hairy-flower wild buckwheat (group 2)
- Eriogonum hoffmannii hoffmann's buckwheat
- Eriogonum hoffmannii robust hoffmann's buckwheat
- Eriogonum hookeri hooker's wild buckwheat (group 2)
- Eriogonum incanum frosted wild buckwheat (group 3)
- Eriogonum inerme goodman's unarmed wild buckwheat
- Eriogonum inerme unarmed wild buckwheat
- Eriogonum inflatum desert trumpet (groups 2 4)
- Eriogonum intrafractum jointed buckwheat (group 4)
- Eriogonum kelloggii kellogg's buckwheat (group 3)
- Eriogonum kennedyi southern alpine buckwheat
- Eriogonum kennedyi southern mountain buckwheat
- Eriogonum kennedyi kennedy's wild buckwheat
- Eriogonum kennedyi kern buckwheat
- Eriogonum kennedyi purpus' wild buckwheat
- Eriogonum latens inyo wild buckwheat (group 3)
- Eriogonum latifolium seaside wild buckwheat (group 4)
- Eriogonum libertini dubakella mountain buckwheat (group 3)
- Eriogonum lobbii lobb's wild buckwheat (group 3)
- Eriogonum luteolum tiburon buckwheat
- Eriogonum luteolum golden-carpet wild buckwheat
- Eriogonum luteolum mokelumne hill wild buckwheat
- Eriogonum luteolum jack's wild buckwheat
- Eriogonum maculatum spotted wild buckwheat (group 2)
- Eriogonum marifolium mccloud wild buckwheat
- Eriogonum marifolium marum-leaf wild buckwheat
- Eriogonum mensicola pinyon mesa buckwheat (group 4)
- Eriogonum microthecum northern limestone buckwheat
- Eriogonum microthecum yellow-flowered wild buckwheat
- Eriogonum microthecum san bernardino wild buckwheat
- Eriogonum microthecum johnston's buckwheat
- Eriogonum microthecum bear lake buckwheat
- Eriogonum microthecum inyo mountains buckwheat
- Eriogonum microthecum great basin wild buckwheat
- Eriogonum microthecum panamint mountains buckwheat
- Eriogonum microthecum schoolcraft's wild buckwheat
- Eriogonum microthecum simpson's wild buckwheat
- Eriogonum mohavense western mojave wild buckwheat (group 1)
- Eriogonum molestum pineland wild buckwheat (group 1)
- Eriogonum nervulosum snow mountain buckwheat (group 3)
- Eriogonum nidularium birdnest wild buckwheat (group 1)
- Eriogonum nortonii pinnacles buckwheat (group 1)
- Eriogonum nudum ear-shaped wild buckwheat
- Eriogonum nudum ben lomond buckwheat
- Eriogonum nudum reduced wild buckwheat
- Eriogonum nudum protruding buckwheat
- Eriogonum nudum mouse buckwheat
- Eriogonum nudum naked wild buckwheat
- Eriogonum nudum harford's wild buckwheat
- Eriogonum nudum del norte buckwheat
- Eriogonum nudum little-flower wild buckwheat
- Eriogonum nudum antioch dunes buckwheat
- Eriogonum nudum fremont's wild buckwheat
- Eriogonum nudum kings river buckwheat
- Eriogonum nudum sierran crest wild buckwheat
- Eriogonum nudum weston's wild buckwheat
- Eriogonum nummulare money wild buckwheat (group 4)
- Eriogonum nutans deeth wild buckwheat
- Eriogonum nutans dugway wild buckwheat
- Eriogonum ochrocephalum ochre-flowered buckwheat (group 4)
- Eriogonum ordii fort mohave wild buckwheat (group 2)
- Eriogonum ovalifolium heavenly wild buckwheat
- Eriogonum ovalifolium depressed wild buckwheat
- Eriogonum ovalifolium brown-margined buckwheat
- Eriogonum ovalifolium monarch buckwheat
- Eriogonum ovalifolium sierran cushion wild buckwheat
- Eriogonum ovalifolium cushion wild buckwheat
- Eriogonum ovalifolium purple cushion wild buckwheat
- Eriogonum ovalifolium cushenbury buckwheat
- Eriogonum palmerianum palmer's wild buckwheat (group 1)
- Eriogonum panamintense panamint mountain wild buckwheat (group 4)
- Eriogonum parishii parish's wild buckwheat (group 2)
- Eriogonum parvifolium seacliff wild buckwheat (group 4)
- Eriogonum pendulum waldo wild buckwheat (group 4)
- Eriogonum plumatella yucca wild buckwheat (group 4)
- Eriogonum polycladon sorrel wild buckwheat (group 1)
- Eriogonum polypodum tulare county buckwheat (group 3)
- Eriogonum prattenianum kettle dome buckwheat
- Eriogonum prattenianum nevada city wild buckwheat
- Eriogonum prociduum prostrate buckwheat (group 4)
- Eriogonum pusillum yellow turbans (group 2)
- Eriogonum pyrolifolium hairy shasta wild buckwheat
- Eriogonum pyrolifolium pyrola-leaved buckwheat
- Eriogonum reniforme kidney-leaf wild buckwheat (group 2)
- Eriogonum rixfordii pagoda wild buckwheat (group 2)
- Eriogonum rosense mount rose wild buckwheat (group 4)
- Eriogonum roseum wand wild buckwheat (group 1)
- Eriogonum rupinum wyman creek wild buckwheat (group 4)
- Eriogonum saxatile hoary wild buckwheat (group 4)
- Eriogonum shockleyi shockley's buckwheat (group 4)
- Eriogonum siskiyouense siskiyou buckwheat (group 3)
- Eriogonum spectabile barron's buckwheat (group 4)
- Eriogonum spergulinum mountain meadow wild buckwheat
- Eriogonum spergulinum redding's wild buckwheat
- Eriogonum spergulinum spurry wild buckwheat
- Eriogonum sphaerocephalum halimium wild buckwheat
- Eriogonum sphaerocephalum rock wild buckwheat
- Eriogonum strictum goose lake wild buckwheat
- Eriogonum strictum greene's buckwheat
- Eriogonum strictum proliferous wild buckwheat
- Eriogonum temblorense temblor buckwheat (group 1)
- Eriogonum ternatum ternate buckwheat (group 3)
- Eriogonum thomasii thomas' wild buckwheat (group 2)
- Eriogonum thornei thorne's buckwheat (group 4)
- Eriogonum thurberi thurber's wild buckwheat (group 2)
- Eriogonum trichopes little desert trumpet (group 2)
- Eriogonum tripodum tripod buckwheat (group 3)
- Eriogonum truncatum mount diablo buckwheat (group 1)
- Eriogonum twisselmannii twisselmann's buckwheat (group 3)
- Eriogonum umbellatum ahart's buckwheat
- Eriogonum umbellatum one-eyed sulphur flower
- Eriogonum umbellatum bay buckwheat
- Eriogonum umbellatum sherman pass sulphur flower
- Eriogonum umbellatum sherwin grade sulphur flower
- Eriogonum umbellatum coville's sulphur flower
- Eriogonum umbellatum bicolor sulphur flower
- Eriogonum umbellatum american valley sulphur flower
- Eriogonum umbellatum sierra nevada sulphur flower
- Eriogonum umbellatum warner mountains buckwheat
- Eriogonum umbellatum goodman's sulphur flower
- Eriogonum umbellatum mount eddy buckwheat
- Eriogonum umbellatum juniper sulphur-flowered buckwheat
- Eriogonum umbellatum scott valley buckwheat
- Eriogonum umbellatum alpine sulphur-flowered buckwheat
- Eriogonum umbellatum modoc sulphur flower
- Eriogonum umbellatum munz's sulphur flower
- Eriogonum umbellatum nelsons' sulphur flower
- Eriogonum umbellatum nevada sulphur flower
- Eriogonum umbellatum american river sulphur flower
- Eriogonum umbellatum small's sulphur flower
- Eriogonum umbellatum beautiful sulphur flower
- Eriogonum umbellatum ferris' sulphur flower
- Eriogonum umbellatum donner pass buckwheat
- Eriogonum umbellatum panamint sulphur flower
- Eriogonum umbellatum sulphur flower (group 3)
- Eriogonum ursinum blushing wild buckwheat
- Eriogonum ursinum bear valley wild buckwheat
- Eriogonum vestitum idria buckwheat (group 1)
- Eriogonum vimineum wicker-stem wild buckwheat (group 1)
- Eriogonum viridescens two-toothed wild buckwheat (group 2)
- Eriogonum wrightii ringed-stem bastard-sage
- Eriogonum wrightii knot-stem bastard-sage
- Eriogonum wrightii olancha peak buckwheat
- Eriogonum wrightii short-stemmed bastard-sage
- Eriogonum wrightii rough-node bastard-sage
- Eriogonum wrightii wright's bastard-sage
- Eriogonum wrightii bastard-sage (group 4)
- Erioneuron pilosum hairy erioneuron
- Eriophorum gracile slender cottongrass
- Eriophyllum ambiguum beautiful woolly sunflower
- Eriophyllum confertiflorum tansy-flowered woolly sunflower
- Eriophyllum confertiflorum golden-yarrow yellow-yarrow
- Eriophyllum congdonii congdon's woolly sunflower
- Eriophyllum jepsonii jepson's woolly sunflower
- Eriophyllum lanatum fort tejon woolly sunflower
- Eriophyllum lanatum oregon sunshine
- Eriophyllum lanatum southern sierra woolly sunflower
- Eriophyllum lanatum common woolly sunflower
- Eriophyllum latilobum san mateo woolly sunflower
- Eriophyllum mohavense barstow woolly sunflower
- Eriophyllum multicaule many-stem woolly sunflower
- Eriophyllum nubigenum yosemite woolly sunflower
- Eriophyllum pringlei pringle's woolly sunflower
- Eriophyllum staechadifolium seaside woolly sunflower
- Eriophyllum wallacei wallace's woolly daisy
- Erodium cicutarium redstem filaree
- Erodium moschatum greenstem filaree
- Erodium texanum texas filaree
- Eryngium alismifolium alisma-leaved button-celery
- Eryngium aristulatum hoover's button-celery
- Eryngium aristulatum san diego button-celery
- Eryngium armatum coastal button-celery
- Eryngium articulatum beethistle
- Eryngium castrense great valley coyote-thistle
- Eryngium constancei loch lomond button-celery
- Eryngium mathiasiae mathias' button-celery
- Eryngium pendletonense pendleton button-celery
- Eryngium pinnatisectum tuolumne button-celery
- Eryngium racemosum delta button-celery
- Eryngium spinosepalum spiny-sepaled button-celery
- Eryngium vaseyi coyote-thistle
- Erysimum ammophilum sand-loving wallflower
- Erysimum capitatum western wallflower
- Erysimum cheiranthoides wormseed mustard
- Erysimum franciscanum san francisco wallflower
- Erysimum insulare island wallflower
- Erysimum menziesii menzies' wallflower
- Erysimum suffrutescens suffrutescent wallflower
- Erysimum teretifolium santa cruz wallflower
- Erythronium citrinum lemon-colored fawn lily
- Erythronium citrinum scott mountains fawn lily
- Erythronium grandiflorum glacier lily
- Erythronium helenae st. helena fawn lily
- Erythronium hendersonii henderson's fawn lily
- Erythronium klamathense klamath fawn lily
- Erythronium oregonum giant fawn lily
- Erythronium pluriflorum shuteye peak fawn lily
- Erythronium pusaterii kaweah fawn lily
- Erythronium revolutum coast fawn lily
- Erythronium taylorii pilot ridge fawn lily
- Erythronium tuolumnense tuolumne fawn lily
- Eschscholzia californica california poppy
- Eschscholzia hypecoides san benito poppy
- Eschscholzia lemmonii tejon poppy
- Eschscholzia lobbii frying pans
- Eschscholzia ramosa island poppy
- Eschscholzia rhombipetala diamond-petaled california poppy
- Eucalyptus camaldulensis red gum river red gum
- Eucalyptus citriodora lemon-scented gum
- Eucalyptus cladocalyx sugar gum
- Eucalyptus conferruminata spider gum bushy yate
- Eucalyptus globulus blue gum
- Eucalyptus polyanthemos silver dollar gum red box
- Eucalyptus pulchella white peppermint
- Eucalyptus sideroxylon red iron bark
- Eucalyptus tereticornis forest red gum
- Eucalyptus viminalis manna gum ribbon gum
- Eucephalus glabratus siskiyou aster
- Eucephalus tomentellus brickellbush aster
- Eucephalus vialis wayside aster
- Euchiton gymnocephalus creeping cudweed
- Euchiton involucratus star cottonleaf
- Euchiton sphaericus globe cottonleaf
- Eucnide rupestris annual rock-nettle
- Euonymus occidentalis western burning bush
- Euphorbia abramsiana abrams' spurge
- Euphorbia albomarginata rattlesnake sandmat
- Euphorbia arizonica arizona spurge
- Euphorbia crenulata chinese caps
- Euphorbia cyathophora painted leaf
- Euphorbia davidii david's poinsettia
- Euphorbia dendroides tree spurge
- Euphorbia dentata toothed poinsettia
- Euphorbia eriantha beetle spurge
- Euphorbia exstipulata clark mountain spurge
- Euphorbia fendleri fendler's sandmat
- Euphorbia glyptosperma ridge-seeded spurge
- Euphorbia helioscopia wartweed
- Euphorbia hooveri hoover's spurge
- Euphorbia jaegeri orocopia mountains spurge
- Euphorbia lathyris caper spurge
- Euphorbia lurida woodland spurge
- Euphorbia maculata spotted spurge
- Euphorbia melanadenia red-gland spurge
- Euphorbia micromera sonoran sandmat
- Euphorbia misera cliff spurge
- Euphorbia myrsinites myrtle spurge
- Euphorbia nutans eyebane spurge
- Euphorbia oblongata eggleaf spurge
- Euphorbia ocellata dune spurge
- Euphorbia ocellata valley spurge
- Euphorbia ocellata stony creek spurge
- Euphorbia parishii parish's sandmat
- Euphorbia parryi parry's spurge
- Euphorbia pediculifera carrizo mountain sandmat
- Euphorbia peplus petty spurge
- Euphorbia platysperma flat-seeded spurge
- Euphorbia polycarpa smallseed sandmat
- Euphorbia prostrata prostrate sandmat
- Euphorbia revoluta revolute spurge
- Euphorbia rigida gopher spurge
- Euphorbia schizoloba mojave spurge
- Euphorbia serpens matted sandmat
- Euphorbia serpyllifolia thyme-leafed spurge
- Euphorbia setiloba yuma sandmat
- Euphorbia spathulata warty spurge
- Euphorbia terracina geraldton carnation weed
- Euphorbia vallis-mortae death valley sandmat
- Euphorbia virgata leafy spurge
- Euphrosyne acerosa copperwort
- Euphrosyne nevadensis nevada wormwood
- Eurybia merita subalpine aster
- Euthamia occidentalis western goldenrod
- Extriplex californica california orach
- Extriplex joaquinana san joaquin spearscale
- Fallopia baldschuanica bukhara fleeceflower
- Fallopia convolvulus black bindweed
- Fallopia japonica japanese knotweed
- Fallopia sachalinensis giant knotweed
- Fendlerella utahensis yerba desierto
- Ferocactus cylindraceus california barrel cactus
- Ferocactus viridescens san diego barrel cactus
- Festuca arundinacea tall fescue
- Festuca brachyphylla alpine fescue
- Festuca bromoides brome fescue
- Festuca californica california fescue
- Festuca idahoensis idaho fescue blue bunchgrass
- Festuca minutiflora small-flowered fescue
- Festuca myuros rattail sixweeks grass
- Festuca occidentalis western fescue
- Festuca octoflora sixweeks grass
- Festuca perennis rye grass
- Festuca pratensis meadow fescue
- Festuca rubra red fescue
- Festuca saximontana mountain fescue
- Festuca subulata bearded fescue
- Festuca subuliflora crinkle-awn fescue
- Festuca temulenta darnel tares
- Festuca trachyphylla hard or sheep fescue
- Festuca viridula mountain bunch grass green fescue
- Ficus carica edible fig
- Filago pyramidata broadleaf cottonrose
- Fimbristylis thermalis hot springs fimbristylis
- Foeniculum vulgare fennel
- Forestiera pubescens desert olive
- Fouquieria splendens ocotillo
- Fragaria chiloensis beach strawberry
- Fragaria vesca wood strawberry
- Fragaria virginiana mountain strawberry
- Frangula californica california coffee berry
- Frangula purshiana caribou coffee berry
- Frangula purshiana cascara
- Frangula rubra sierra coffee berry
- Frankenia palmeri palmer's frankenia
- Frankenia pulverulenta european sea heath
- Frankenia salina alkali heath
- Frasera albomarginata desert green-gentian
- Frasera albomarginata clark mountain green-gentian
- Frasera neglecta pine green-gentian
- Frasera speciosa monument plant
- Frasera umpquaensis umpqua green-gentian
- Fraxinus anomala single-leaf ash
- Fraxinus dipetala california ash
- Fraxinus latifolia oregon ash
- Fraxinus parryi chaparral ash
- Fraxinus velutina velvet ash
- Fremontodendron decumbens pine hill flannelbush
- Fremontodendron mexicanum mexican flannelbush
- Fritillaria affinis checker lily
- Fritillaria agrestis stinkbells
- Fritillaria biflora hillsborough chocolate lily
- Fritillaria biflora chocolate lily mission bells
- Fritillaria brandegeei greenhorn fritillary
- Fritillaria eastwoodiae butte county fritillary
- Fritillaria falcata talus fritillary
- Fritillaria gentneri gentner's fritillary
- Fritillaria glauca siskiyou fritillaria
- Fritillaria liliacea fragrant fritillary
- Fritillaria micrantha brown bells
- Fritillaria ojaiensis ojai fritillary
- Fritillaria pinetorum pine fritillary
- Fritillaria pluriflora adobe-lily
- Fritillaria pudica yellow fritillary
- Fritillaria purdyi purdy's fritillary
- Fritillaria recurva scarlet fritillary
- Fritillaria striata striped adobe-lily
- Fritillaria viridea san benito fritillary
- Fumaria capreolata white ramping fumitory
- Fumaria officinalis fumitory
- Funastrum crispum wavyleaf twinevine
- Funastrum cynanchoides climbing milkweed
- Funastrum hirtellum trailing townula
- Funastrum utahense utah vine milkweed
- Galium ambiguum yolla bolly bedstraw
- Galium andrewsii phlox-leaf serpentine bedstraw
- Galium andrewsii phlox-leaved bedstraw
- Galium angustifolium borrego bedstraw
- Galium angustifolium san antonio canyon bedstraw
- Galium angustifolium slender bedstraw
- Galium angustifolium san jacinto mountains bedstraw
- Galium angustifolium onyx peak bedstraw
- Galium angustifolium narrowly leaved bedstraw
- Galium aparine goose grass
- Galium bifolium low mountain bedstraw
- Galium bolanderi bolander's bedstraw
- Galium boreale northern bedstraw
- Galium buxifolium box bedstraw
- Galium californicum cone peak bedstraw
- Galium californicum san miguel island bedstraw
- Galium californicum alvin meadow bedstraw
- Galium californicum el dorado bedstraw
- Galium californicum california bedstraw
- Galium catalinense san clemente island bedstraw
- Galium catalinense santa catalina island bedstraw
- Galium clementis santa lucia bedstraw
- Galium cliftonsmithii santa barbara bedstraw
- Galium divaricatum lamarck's bedstraw
- Galium glabrescens modoc bedstraw
- Galium grande san gabriel bedstraw
- Galium grayanum gray's bedstraw
- Galium hallii nodding bedstraw
- Galium hardhamiae hardham's bedstraw
- Galium hilendiae panamint mountains bedstraw
- Galium hilendiae kingston mountains bedstraw
- Galium hilendiae hilend's bedstraw
- Galium hypotrichium telescope peak bedstraw
- Galium hypotrichium alpine bedstraw
- Galium jepsonii jepson's bedstraw
- Galium johnstonii johnston's bedstraw
- Galium matthewsii matthews' bedstraw
- Galium mollugo hedge bedstraw
- Galium multiflorum kellogg's bedstraw
- Galium munzii munz's bedstraw
- Galium murale tiny bedstraw
- Galium muricatum humboldt bedstraw
- Galium nuttallii nuttall's island bedstraw
- Galium nuttallii san diego bedstraw
- Galium oreganum oregon bedstraw
- Galium parishii parish's bedstraw
- Galium parisiense wall bedstraw
- Galium porrigens climbing bedstraw
- Galium proliferum desert bedstraw
- Galium serpenticum scott mountain bedstraw
- Galium serpenticum warner mountains bedstraw
- Galium sparsiflorum sequoia bedstraw
- Galium tricornutum rough corn bedstraw
- Galium triflorum sweet-scented bedstraw
- Galium wrightii wright's bedstraw
- Gambelia speciosa showy island snapdragon showy greenbright
- Gastridium phleoides nit grass
- Gaultheria humifusa alpine wintergreen
- Gaultheria ovatifolia slender wintergreen
- Gaultheria shallon salal
- Genista maderensis madeira broom
- Genista monosperma bridal veil broom
- Genista monspessulana french broom
- Gentiana affinis oregon gentian
- Gentiana calycosa explorers' gentian
- Gentiana fremontii fremont's gentian
- Gentiana newberryi alpine gentian
- Gentiana plurisetosa klamath gentian
- Gentiana prostrata pygmy gentian
- Gentiana sceptrum king's scepter gentian
- Gentiana setigera mendocino gentian
- Gentianella amarella northern gentian
- Gentianopsis holopetala sierra gentian
- Gentianopsis simplex hikers' gentian
- Geraea canescens desert-sunflower
- Geraea viscida sticky geraea
- Geum aleppicum aleppo or yellow avens
- Geum macrophyllum large-leaved avens
- Geum triflorum prairie-smoke
- Gilia achilleifolia california gilia
- Gilia aliquanta puffcalyx gilia western gilia
- Gilia angelensis chaparral gilia
- Gilia austro-occidentalis southwestern gilia
- Gilia brecciarum break gilia nevada gilia
- Gilia cana desert gilia showy gilia
- Gilia capitata blue coast gilia
- Gilia capitata pacific gilia
- Gilia capitata woolly-headed gilia
- Gilia capitata bluehead gilia
- Gilia clivorum purplespot gilia
- Gilia clokeyi clokey's gilia
- Gilia diegensis coastal gilia
- Gilia inconspicua shy gilia
- Gilia interior inland gilia
- Gilia latiflora cuyama gilia
- Gilia latiflora davy's broad-flowered gilia
- Gilia latiflora broad-leaved gilia
- Gilia latiflora broad-flowered gilia
- Gilia leptantha san bernardino gilia
- Gilia leptantha pine gilia
- Gilia leptantha purpus' fineflowered gilia
- Gilia leptantha fineflowered gilia
- Gilia malior scrub gilia great basin gilia
- Gilia millefoliata dark-eyed gilia
- Gilia minor little gilia
- Gilia modocensis modoc gilia
- Gilia nevinii nevin's gilia
- Gilia ochroleuca volcanic gilia
- Gilia ophthalmoides eyed gilia yellow-eyed gilia
- Gilia salticola salt gilia
- Gilia scopulorum rock gilia
- Gilia sinuata rosy gilia
- Gilia stellata star gilia
- Gilia tenuiflora trumpet-throated gilia
- Gilia tenuiflora monterey gilia
- Gilia tenuiflora hoffmann's slender-flowered gilia
- Gilia tenuiflora slender-flowered gilia greater yellowthroat gilia
- Gilia transmontana transmontane gilia
- Gilia tricolor bird's-eye gilia
- Gilia yorkii monarch gilia
- Gilmania luteola golden-carpet gilmania
- Githopsis diffusa mission canyon bluecup
- Githopsis pulchella serpentine bluecup
- Githopsis tenella delicate bluecup
- Glaucium flavum sea poppy
- Glebionis coronaria garland or crown daisy
- Glebionis segetum corn chrysanthemum
- Gleditsia triacanthos honey locust
- Glehnia littoralis american glehnia
- Glinus radiatus shining damascisa
- Glossopetalon pungens pungent glossopetalon
- Glossopetalon spinescens nevada greasewood
- Glyceria ×occidentalis western manna grass
- Glyceria borealis boreal manna grass
- Glyceria declinata low manna grass
- Glyceria elata fowl manna grass
- Glyceria fluitans water manna grass
- Glyceria grandis american manna grass
- Glyceria leptostachya narrow manna grass
- Glyceria striata ridged manna grass
- Glycyrrhiza glabra licorice
- Glycyrrhiza lepidota wild licorice
- Goodmania luteola golden goodmania
- Goodyera oblongifolia rattlesnake-plantain
- Gossypium hirsutum cotton
- Gratiola ebracteata bractless hedge-hyssop
- Gratiola heterosepala boggs lake hedge-hyssop
- Gratiola neglecta clammy hedge-hyssop
- Grindelia ×paludosa suisun gumplant
- Grindelia fraxinipratensis ash meadows gumplant
- Grindelia hallii san diego gumplant
- Grindelia stricta marsh gumplant
- Grusonia parishii parish's club-cholla
- Grusonia pulchella beautiful club-cholla
- Guilleminea densa small matweed
- Gunnera tinctoria chilean-rhubarb
- Gutierrezia californica california matchweed
- Gutierrezia microcephala sticky snakeweed
- Gutierrezia sarothrae matchweed
- Gypsophila elegans showy baby's-breath
- Gypsophila paniculata baby's-breath
- Gypsophila scorzonerifolia glandular baby's-breath
- Hackelia amethystina amethyst stickseed
- Hackelia bella beautiful stickseed
- Hackelia brevicula poison canyon stickseed
- Hackelia californica california stickseed
- Hackelia cusickii cusick's stickseed
- Hackelia floribunda many-flowered stickseed
- Hackelia micrantha jessica's stickseed meadow stickseed
- Hackelia mundula pink-flowered stickseed
- Hackelia nervosa sierran stickseed
- Hackelia setosa bristly stickseed siskiyou stickseed
- Hackelia sharsmithii sharsmith's stickseed
- Hackelia velutina velvety stickseed
- Halimodendron halodendron russian salt tree
- Halogeton glomeratus saltlover
- Harmonia doris-nilesiae niles' harmonia
- Harmonia guggolziorum guggolz's harmonia
- Harmonia hallii hall's harmonia
- Harmonia nutans nodding harmonia
- Harmonia stebbinsii stebbins' harmonia
- Harpagonella palmeri palmer's grapplinghook
- Hazardia brickellioides brickell goldenbush
- Hazardia cana san clemente island hazardia
- Hazardia detonsa island hazardia
- Hazardia orcuttii orcutt's hazardia
- Hazardia squarrosa saw-toothed goldenbush
- Hazardia whitneyi whitney's goldenbush
- Hedeoma drummondii drummond's false pennyroyal
- Hedeoma nana california mock pennyroyal
- Hedera canariensis canary islands ivy
- Hedera helix english ivy
- Hedychium flavescens yellow ginger
- Hedypnois rhagadioloides crete weed
- Helianthella castanea diablo helianthella
- Helianthus bolanderi bolander's sunflower
- Helianthus californicus california sunflower
- Helianthus ciliaris blueweed
- Helianthus cusickii cusick's sunflower
- Helianthus exilis serpentine sunflower
- Helianthus gracilentus slender sunflower
- Helianthus inexpectatus newhall sunflower
- Helianthus niveus algodones dunes sunflower
- Helianthus nuttallii nuttall's sunflower
- Helianthus nuttallii los angeles sunflower
- Helianthus petiolaris prairie sunflower
- Helichrysum petiolare licorice plant
- Heliomeris multiflora nevada goldeneye
- Heliotropium amplexicaule fragrant heliotrope
- Heliotropium convolvulaceum morning-glory heliotrope
- Heliotropium curassavicum seaside heliotrope alkali heliotrope
- Heliotropium europaeum european heliotrope
- Helminthotheca echioides bristly ox-tongue
- Hemizonia congesta mendocino tarplant
- Hemizonia congesta pale-yellow hayfield tarplant
- Hemizonia congesta tracy's tarplant
- Heracleum maximum cow parsnip giant hogweed
- Herissantia crispa curly herissantia
- Hesperevax acaulis stemless evax
- Hesperevax acaulis fire evax
- Hesperevax acaulis dwarf evax
- Hesperevax caulescens hogwallow starfish
- Hesperevax sparsiflora shortleaved evax
- Hesperevax sparsiflora erect evax
- Hesperis matronalis dame's rocket
- Hesperocyparis abramsiana santa cruz cypress
- Hesperocyparis bakeri baker cypress siskiyou cypress
- Hesperocyparis forbesii tecate cypress
- Hesperocyparis goveniana gowen cypress
- Hesperocyparis macnabiana mcnab cypress
- Hesperocyparis macrocarpa monterey cypress
- Hesperocyparis nevadensis piute cypress
- Hesperocyparis pygmaea pygmy cypress
- Hesperocyparis sargentii sargent cypress
- Hesperocyparis stephensonii cuyamaca cypress
- Hesperolinon adenophyllum glandular western flax
- Hesperolinon bicarpellatum two-carpellate western flax
- Hesperolinon breweri brewer's western flax
- Hesperolinon congestum marin western flax
- Hesperolinon didymocarpum lake county western flax
- Hesperolinon drymarioides drymaria-like western flax
- Hesperolinon tehamense tehama county western flax
- Heteranthera dubia water star-grass
- Heteropogon contortus tanglehead
- Heterotheca grandiflora telegraph weed
- Heterotheca monarchensis monarch goldenaster
- Heterotheca oregona rayless goldenaster
- Heterotheca sessiliflora beach goldenaster
- Heterotheca sessiliflora sessileflower goldenaster
- Heterotheca shevockii shevock's goldenaster
- Heterotheca subaxillaris camphor-weed
- Heterotheca villosa hairy goldenaster
- Heuchera abramsii abrams' alumroot
- Heuchera brevistaminea laguna mountains alumroot
- Heuchera hirsutissima shaggy-haired alumroot
- Heuchera maxima island alumroot
- Heuchera parishii parish's alumroot
- Hibiscus denudatus pale face
- Hibiscus lasiocarpos woolly rose-mallow
- Hibiscus trionum flower-of-an-hour
- Hieracium albiflorum white hawkweed
- Hieracium argutum southern hawkweed
- Hieracium aurantiacum orange hawkweed
- Hieracium bolanderi bolander's hawkweed
- Hieracium greenei greene's hawkweed
- Hieracium horridum prickly hawkweed
- Hieracium nudicaule naked-stemmed hawkweed
- Hieracium parryi parry's hawkweed
- Hieracium scouleri western hawkweed
- Hieracium triste slender hawkweed
- Hilaria jamesii galleta
- Hilaria rigida big galleta
- Hoffmannseggia glauca pig-nut hog potato
- Hoita strobilina loma prieta hoita
- Holcus lanatus common velvet grass
- Holcus mollis creeping velvet grass
- Hollisteria lanata false spikeflower
- Holmgrenanthe petrophila rock lady
- Holocarpha macradenia santa cruz tarplant
- Holocarpha virgata graceful tarplant
- Holodiscus discolor oceanspray
- Holozonia filipes whitecrown
- Hordeum arizonicum arizona barley
- Hordeum brachyantherum northern barley
- Hordeum brachyantherum california barley
- Hordeum depressum low barley alkali barley
- Hordeum intercedens bobtail barley
- Hordeum jubatum foxtail barley squirreltail barley
- Hordeum marinum mediterranean barley
- Hordeum murinum smooth barley
- Hordeum murinum hare barley
- Hordeum murinum wall barley
- Hordeum vulgare barley
- Horkelia bolanderi bolander's horkelia
- Horkelia congesta josephine horkelia
- Horkelia cuneata mesa horkelia
- Horkelia cuneata kellogg's horkelia
- Horkelia daucifolia jepson's horkelia
- Horkelia hendersonii henderson's horkelia
- Horkelia hispidula white mountains horkelia
- Horkelia howellii howell's horkelia
- Horkelia marinensis point reyes horkelia
- Horkelia parryi parry's horkelia
- Horkelia sericata silky horkelia
- Horkelia tenuiloba thin-lobed horkelia
- Horkelia truncata ramona horkelia
- Horkelia tularensis kern plateau horkelia
- Horkelia wilderae barton flats horkelia
- Horkelia yadonii santa lucia horkelia
- Horsfordia alata pink velvet-mallow
- Horsfordia newberryi newberry's velvet-mallow
- Hosackia crassifolia otay mountain hosackia
- Hosackia gracilis harlequin lotus
- Hosackia oblongifolia copper-flowered bird's-foot trefoil
- Hosackia yollabolliensis yolla bolly mountains bird's-foot trefoil
- Howellanthus dalesianus scott mountain phacelia
- Howellia aquatilis water howellia
- Hulsea brevifolia shortleaved hulsea
- Hulsea californica san diego sunflower
- Hulsea mexicana mexican hulsea
- Hulsea nana little hulsea
- Hulsea vestita beautiful hulsea
- Hulsea vestita san gabriel mountains sunflower
- Hulsea vestita inyo hulsea
- Hulsea vestita parry's sunflower
- Hulsea vestita pygmy hulsea
- Humulus lupulus european hop
- Hydrophyllum alpestre alpine breeches
- Hydrophyllum fendleri white waterleaf
- Hydrophyllum occidentale western waterleaf
- Hydrophyllum tenuipes slenderfoot waterleaf pacific waterleaf
- Hymenopappus filifolius hairy-podded fine-leaf hymenopappus
- Hymenopappus filifolius little cutleaf
- Hymenothrix wrightii wright's hymenothrix
- Hymenoxys lemmonii alkali hymenoxys
- Hymenoxys odorata bitter hymenoxys
- Hyparrhenia hirta thatching grass
- Hypericum anagalloides tinker's penny
- Hypericum calycinum aaron's beard
- Hypericum concinnum gold-wire
- Hypericum perforatum klamathweed
- Hypochaeris glabra smooth cat's-ear
- Hypochaeris radicata rough cat's-ear
- Iberis umbellata globe candytuft
- Ilex aquifolium english holly
- Iliamna bakeri baker's globe mallow
- Iliamna latibracteata california globe mallow
- Iliamna rivularis streambank wild hollyhock
- Impatiens balfourii kashmir balsam
- Impatiens capensis spotted jewelweed
- Impatiens glandulifera policeman's helmet
- Imperata brevifolia california satintail
- Ionactis alpina lava-aster crag-aster
- Ipomoea hederacea ivy morning-glory
- Ipomoea purpurea common morning-glory
- Ipomopsis effusa baja california ipomopsis
- Ipomopsis tenuifolia slender-leaved ipomopsis
- Iris bracteata siskiyou iris
- Iris chrysophylla yellow-flowered iris
- Iris foetidissima coral iris
- Iris hartwegii tuolumne iris
- Iris innominata del norte county iris
- Iris longipetala coast iris
- Iris missouriensis western blue flag
- Iris munzii munz's iris
- Iris tenax orleans iris
- Isatis tinctoria woad
- Isocoma acradenia alkali goldenbush
- Isocoma arguta carquinez goldenbush
- Isocoma menziesii decumbent goldenbush
- Isocoma menziesii satan's goldenbush
- Isocoma menziesii coastal goldenbush
- Iva axillaris poverty weed
- Iva hayesiana san diego marsh-elder
- Ivesia aperta sierra valley ivesia
- Ivesia aperta dog valley ivesia
- Ivesia argyrocoma silver-haired ivesia
- Ivesia arizonica yellow purpusia
- Ivesia baileyi bailey's ivesia
- Ivesia baileyi owyhee ivesia
- Ivesia callida tahquitz ivesia
- Ivesia campestris field ivesia
- Ivesia jaegeri jaeger's ivesia
- Ivesia kingii alkali ivesia
- Ivesia longibracteata castle crags ivesia
- Ivesia lycopodioides club-moss ivesia
- Ivesia paniculata ash creek ivesia
- Ivesia patellifera kingston mountains ivesia
- Ivesia pickeringii pickering's ivesia
- Ivesia santolinoides mousetail ivesia
- Ivesia sericoleuca plumas ivesia
- Ivesia unguiculata yosemite ivesia
- Ivesia webberi webber's ivesia
- Ixia maculata african cornlily
- Jacaranda mimosifolia blue jacaranda
- Jamesia americana rosy-petalled cliffbush
- Jensia yosemitana yosemite tarplant
- Jepsonia heterandra foothill jepsonia
- Jepsonia malvifolia island jepsonia
- Johanneshowellia puberula downy buckwheat
- Juglans californica southern california black walnut
- Juglans hindsii northern california black walnut
- Juglans regia persian or english walnut
- Juncus acuminatus tapered rush (group 3)
- Juncus acutus southwestern spiny rush
- Juncus ambiguus frog rush (group 1)
- Juncus anthelatus kentucky or poverty rush (group 5)
- Juncus articulatus jointed rush (group 3)
- Juncus balticus baltic rush (group 2)
- Juncus bolanderi bolander's rush (group 3)
- Juncus brachyphyllus shortleaved rush (group 5)
- Juncus breweri salt or brewer's rush (group 2)
- Juncus bryoides moss rush (group 1)
- Juncus bufonius clustered toad rush
- Juncus bufonius western toad rush
- Juncus bufonius toad rush (group 1)
- Juncus capillaris hairstemmed rush (group 1)
- Juncus capitatus dwarf rush (group 1)
- Juncus chlorocephalus greenheaded rush (group 3)
- Juncus confusus colorado rush (group 5)
- Juncus cooperi cooper's rush (group 2)
- Juncus covillei coville's rush (group 6)
- Juncus cyperoides bolivian rush (group 6)
- Juncus diffusissimus slim-pod rush (group 3)
- Juncus digitatus finger rush (group 1)
- Juncus drummondii drummond's rush (group 2)
- Juncus dubius mariposa rush (group 3)
- Juncus dudleyi dudley's rush (group 5)
- Juncus duranii duran's rush (group 3)
- Juncus effusus sonoran or baja rush
- Juncus effusus common rush
- Juncus effusus pacific rush
- Juncus effusus eastern soft rush
- Juncus effusus soft or lamp rush (group 2)
- Juncus ensifolius dagger rush swordleaved rush (group 4)
- Juncus exiguus klamath or weak rush (group 2)
- Juncus falcatus sickleleaved rush
- Juncus falcatus alaskan sickleleaved rush
- Juncus gerardi mud rush (group 5)
- Juncus hemiendytus center basin rush
- Juncus hemiendytus hermann's dwarf rush
- Juncus hesperius coast or bog rush (group 2)
- Juncus howellii howell's rush (group 6)
- Juncus interior inland rush (group 5)
- Juncus kelloggii kellogg's dwarf rush (group 1)
- Juncus laccatus shiny rush (group 2)
- Juncus leiospermus ahart's dwarf rush
- Juncus leiospermus red bluff dwarf rush
- Juncus lescurii san francisco rush (group 2)
- Juncus longistylis long-styled rush (group 6)
- Juncus luciensis santa lucia dwarf rush (group 1)
- Juncus macrandrus long-anthered rush (group 4)
- Juncus macrophyllus long-leaved rush (group 6)
- Juncus marginatus grassleaved or red-anthered rush (group 6)
- Juncus mertensianus mertens' rush (group 3)
- Juncus mexicanus mexican rush (group 2)
- Juncus nevadensis dune rush
- Juncus nevadensis nevada or sierran rush
- Juncus nodosus knotted rush (group 3)
- Juncus occidentalis western rush (group 5)
- Juncus orthophyllus straightleaved rush (group 6)
- Juncus oxymeris pointed rush (group 4)
- Juncus parryi parry's rush (group 2)
- Juncus patens spreading rush (group 2)
- Juncus phaeocephalus panicled rush
- Juncus phaeocephalus brownheaded rush
- Juncus planifolius new zealand or flat-leaved rush (groups 1 6)
- Juncus regelii regel's rush (group 6)
- Juncus rugulosus wrinkled rush (group 3)
- Juncus saximontanus rocky mountain rush (group 4)
- Juncus supiniformis hair-leaved rush (group 3)
- Juncus tenuis poverty or slender rush (group 5)
- Juncus textilis mat or basket rush (group 2)
- Juncus tiehmii tiehm's rush (group 1)
- Juncus torreyi torrey's rush (group 3)
- Juncus triformis yosemite dwarf rush (group 1)
- Juncus uncialis inch-high rush (group 1)
- Juncus usitatus australian rush (group 2)
- Juncus xiphioides iris-leaved rush (group 4)
- Juniperus californica california juniper
- Juniperus communis depressed juniper
- Juniperus communis jack's juniper
- Juniperus communis mountain juniper
- Juniperus communis common juniper
- Juniperus grandis sierra juniper grand juniper
- Juniperus occidentalis western juniper
- Juniperus osteosperma utah juniper
- Justicia californica beloperone chuparosa
- Kalmia polifolia swamp laurel box laurel
- Kobresia myosuroides seep kobresia
- Koeberlinia spinosa slender-spined all thorn
- Koeleria gerardi annual june grass bristly koeleria
- Koeleria macrantha june grass
- Kopsiopsis hookeri small ground-cone
- Kopsiopsis strobilacea california ground-cone
- Krameria bicolor white rhatany
- Krameria erecta pima rhatany purple heather little-leaved rhatany
- Krascheninnikovia lanata winter fat
- Lactuca serriola prickly lettuce
- Laennecia coulteri coulter's horseweed
- Lagunaria patersonia norfolk island hibiscus cow itch tree
- Lamium amplexicaule henbit
- Langloisia setosissima lilac sunbonnet
- Langloisia setosissima bristly langloisia
- Lappula redowskii crowned stickseed
- Lappula redowskii western stickseed
- Lappula squarrosa two-rowed stickseed
- Lastarriaea coriacea leather-spineflower
- Lasthenia burkei burke's goldfields
- Lasthenia californica baker's goldfields
- Lasthenia californica california goldfields
- Lasthenia californica perennial goldfields
- Lasthenia chrysantha alkali-sink goldfields
- Lasthenia conjugens contra costa goldfields
- Lasthenia coronaria crowned or royal goldfields
- Lasthenia debilis greene's goldfields
- Lasthenia ferrisiae ferris' goldfields
- Lasthenia fremontii fremont's goldfields
- Lasthenia glaberrima smooth goldfields
- Lasthenia glabrata coulter's goldfields
- Lasthenia glabrata yellow-ray goldfields
- Lasthenia gracilis common goldfields
- Lasthenia leptalea salinas valley goldfields
- Lasthenia maritima maritime or seaside goldfields
- Lasthenia microglossa small-ray goldfields
- Lasthenia minor coastal goldfields
- Lasthenia platycarpha alkali goldfields
- Lathrocasis tenerrima delicate gilia
- Lathyrus biflorus two-flowered pea
- Lathyrus delnorticus del norte pea
- Lathyrus glandulosus sticky pea
- Lathyrus hirsutus caley pea
- Lathyrus hitchcockianus bullfrog mountain pea
- Lathyrus japonicus seaside pea
- Lathyrus jepsonii delta tule pea
- Lathyrus latifolius perennial sweet pea
- Lathyrus odoratus sweet pea
- Lathyrus palustris marsh pea
- Lathyrus rigidus rigid pea
- Lathyrus splendens pride-of-california
- Lathyrus tingitanus tangier pea
- Laurus nobilis bay laurel
- Lavatera olbia tree lavatera
- Lavatera trimestris annual lavatera rose mallow
- Layia carnosa beach layia
- Layia discoidea rayless layia
- Layia glandulosa white layia
- Layia heterotricha pale-yellow layia
- Layia jonesii jones' layia
- Layia leucopappa comanche point layia
- Layia munzii munz's tidy-tips
- Layia platyglossa tidy-tips
- Layia septentrionalis colusa layia
- Leersia oryzoides rice cutgrass
- Legenere limosa legenere
- Lens culinaris lentil
- Leontodon saxatilis hairy hawkbit
- Lepechinia cardiophylla heart-leaved pitcher sage
- Lepechinia fragrans fragrant pitcher sage
- Lepechinia ganderi gander's pitcher sage
- Lepechinia rossii ross' pitcher sage
- Lepidium appelianum white-top
- Lepidium chalepense lens-podded hoary cress
- Lepidium coronopus swine cress
- Lepidium didymum lesser swine cress
- Lepidium draba heart-podded hoary cress
- Lepidium jaredii jared's peppergrass
- Lepidium latifolium perennial pepperweed
- Leptochloa dubia green sprangletop
- Leptochloa fusca bearded sprangletop
- Leptochloa fusca mexican sprangletop
- Leptochloa fusca sprangletop
- Leptochloa panicea red sprangletop
- Leptochloa viscida sticky sprangletop sonoran sprangletop
- Leptosiphon acicularis bristly leptosiphon
- Leptosiphon ambiguus serpentine leptosiphon
- Leptosiphon ciliatus whisker brush
- Leptosiphon croceus coast yellow leptosiphon
- Leptosiphon floribundus santa rosa mountains leptosiphon
- Leptosiphon grandiflorus large-flowered leptosiphon
- Leptosiphon jepsonii jepson's leptosiphon
- Leptosiphon latisectus broad-lobed leptosiphon
- Leptosiphon montanus mustang clover
- Leptosiphon nuttallii mount tedoc leptosiphon
- Leptosiphon oblanceolatus sierra nevada leptosiphon
- Leptosiphon pygmaeus pygmy leptosiphon
- Leptosiphon rattanii rattan's leptosiphon
- Leptosiphon rosaceus rose leptosiphon
- Leptosiphon serrulatus madera leptosiphon
- Leptospermum laevigatum australian tea tree
- Leptosyne gigantea giant tickseed
- Leptosyne hamiltonii mount hamilton tickseed
- Leptosyne maritima sea dahlia
- Lessingia arachnoidea crystal springs lessingia
- Lessingia germanorum san francisco lessingia
- Lessingia glandulifera warner springs lessingia
- Lessingia hololeuca woolly-headed lessingia
- Lessingia leptoclada sierra lessingia
- Lessingia micradenia smooth lessingia
- Lessingia micradenia tamalpais lessingia
- Lessingia nana dwarf lessingia
- Lessingia tenuis spring lessingia
- Lessingia virgata wand lessingia
- Leucanthemum lacustre portuguese daisy
- Leucanthemum maximum shasta daisy
- Leucanthemum vulgare ox-eye daisy
- Leucojum aestivum snowflake
- Leucosyris arida silver lake daisy
- Leucosyris carnosa shrubby alkali aster
- Leucothoe davisiae sierra laurel
- Lewisia brachycalyx short-sepaled lewisia
- Lewisia cantelovii cantelow's lewisia
- Lewisia congdonii congdon's lewisia
- Lewisia cotyledon heckner's lewisia
- Lewisia cotyledon howell's lewisia
- Lewisia cotyledon cliff maids
- Lewisia disepala yosemite lewisia
- Lewisia glandulosa glandular lewisia
- Lewisia kelloggii hutchison's lewisia
- Lewisia kelloggii kellogg's lewisia
- Lewisia leeana quill-leaved lewisia
- Lewisia longipetala long-petaled lewisia
- Lewisia nevadensis nevada lewisia
- Lewisia oppositifolia opposite-leaved lewisia
- Lewisia pygmaea dwarf lewisia
- Lewisia rediviva small bitterroot
- Lewisia rediviva bitterroot
- Lewisia serrata saw-toothed lewisia
- Lewisia stebbinsii stebbins' lewisia
- Lewisia triphylla three-leaved lewisia
- Ligustrum japonicum japanese privet
- Ligustrum lucidum chinese privet
- Ligustrum ovalifolium california privet
- Lilaeopsis masonii mason's lilaeopsis
- Lilium bolanderi bolander's lily
- Lilium columbianum columbia lily
- Lilium humboldtii humboldt lily
- Lilium humboldtii ocellated humboldt lily
- Lilium kelleyanum kelley's lily
- Lilium kelloggii kellogg's lily
- Lilium maritimum coast lily
- Lilium occidentale western lily
- Lilium pardalinum leopard lily
- Lilium pardalinum pitkin marsh lily
- Lilium pardalinum shasta lily
- Lilium pardalinum vollmer's lily
- Lilium pardalinum wiggins' lily
- Lilium parryi lemon lily
- Lilium parvum alpine lily sierra tiger lily
- Lilium rubescens redwood lily
- Lilium washingtonianum purple-flowered washington lily
- Lilium washingtonianum washington lily
- Limnanthes bakeri baker's meadowfoam
- Limnanthes douglasii point reyes meadowfoam
- Limnanthes floccosa bellinger's meadowfoam
- Limnanthes floccosa butte county meadowfoam
- Limnanthes floccosa woolly meadowfoam
- Limnanthes vinculans sebastopol meadowfoam
- Limnobium spongia american frogbit
- Limonium californicum western marsh-rosemary
- Limosella australis delta mudwort
- Linanthus arenicola sand linanthus
- Linanthus bellus desert beauty
- Linanthus californicus prickly phlox
- Linanthus concinnus san gabriel linanthus
- Linanthus dichotomus evening snow
- Linanthus jaegeri san jacinto linanthus
- Linanthus killipii baldwin lake linanthus
- Linanthus maculatus little san bernardino mountains linanthus
- Linanthus orcuttii orcutt's linanthus
- Linanthus pungens granite gilia
- Linaria dalmatica dalmatian toadflax
- Linaria vulgaris butter-and-eggs
- Linum puberulum plains flax
- Listera banksiana northwest twayblade
- Listera convallarioides broad-leaved twayblade
- Listera cordata heart-leaved twayblade
- Lithophragma maximum san clemente island woodland star
- Lithospermum arvense gromwell
- Lithospermum californicum california stoneseed
- Lithospermum incisum plains stoneseed
- Lithospermum ruderale western stoneseed
- Lobelia cardinalis cardinal flower
- Loeflingia squarrosa spreading pygmyleaf
- Loeseliastrum depressum depressed standing-cypress
- Loeseliastrum matthewsii desert calico
- Logfia arizonica arizona cottonrose
- Logfia depressa hierba limpia
- Logfia filaginoides california cottonrose
- Logfia gallica daggerleaf cottonrose
- Lomatium canbyi canby's lomatium
- Lomatium congdonii congdon's lomatium
- Lomatium engelmannii engelmann's lomatium
- Lomatium foeniculaceum inyo lomatium
- Lomatium foeniculaceum macdougal's lomatium
- Lomatium grayi gray's lomatium
- Lomatium hendersonii henderson's lomatium
- Lomatium hooveri hoover's lomatium
- Lomatium howellii howell's lomatium
- Lomatium insulare san nicolas island lomatium
- Lomatium martindalei coast range lomatium
- Lomatium observatorium mount hamilton lomatium
- Lomatium parvifolium small-leaved lomatium
- Lomatium peckianum peck's lomatium
- Lomatium ravenii raven's lomatium
- Lomatium repostum napa lomatium
- Lomatium rigidum stiff lomatium
- Lomatium shevockii owens peak lomatium
- Lomatium stebbinsii stebbins' lomatium
- Lomatium tracyi tracy's lomatium
- Lonicera ciliosa orange honeysuckle
- Lonicera involucrata twinberry
- Lonicera japonica japanese honeysuckle
- Lonicera subspicata santa barbara honeysuckle
- Lotus corniculatus bird's-foot trefoil
- Ludwigia grandiflora large-flowered primrose-willow
- Ludwigia hexapetala uruguayan primrose-willow
- Luma apiculata arrayan temu
- Lupinus albifrons abrams' lupine
- Lupinus antoninus anthony peak lupine
- Lupinus arboreus yellow bush lupine
- Lupinus arbustus spur lupine
- Lupinus arizonicus arizona lupine
- Lupinus benthamii spider lupine
- Lupinus bicolor miniature lupine
- Lupinus brevicaulis sand lupine
- Lupinus cervinus santa lucia lupine
- Lupinus citrinus orange lupine
- Lupinus citrinus mariposa lupine
- Lupinus concinnus bajada lupine
- Lupinus constancei the lassics lupine
- Lupinus dalesiae quincy lupine
- Lupinus duranii mono lake lupine
- Lupinus elatus silky lupine
- Lupinus elmeri south fork mountain lupine
- Lupinus excubitus interior bush lupine
- Lupinus excubitus mountain springs bush lupine
- Lupinus excubitus grape soda lupine
- Lupinus gracilentus slender lupine
- Lupinus guadalupensis guadalupe island lupine
- Lupinus hirsutissimus stinging lupine
- Lupinus holmgrenianus holmgrens' lupine
- Lupinus lapidicola heller's mount eddy lupine
- Lupinus latifolius bearded lupine
- Lupinus lepidus hockett meadows lupine
- Lupinus lepidus stemless lupine
- Lupinus lepidus dwarf lupine
- Lupinus ludovicianus san luis obispo county lupine
- Lupinus luteolus butter lupine
- Lupinus magnificus coso mountains lupine
- Lupinus magnificus panamint mountains lupine
- Lupinus microcarpus chick lupine
- Lupinus milo-bakeri milo baker's lupine
- Lupinus nevadensis nevada lupine
- Lupinus nipomensis nipomo mesa lupine
- Lupinus odoratus mojave lupine
- Lupinus pachylobus big pod lupine
- Lupinus padre-crowleyi father crowley's lupine
- Lupinus peirsonii peirson's lupine
- Lupinus pusillus intermontane lupine
- Lupinus sericatus cobb mountain lupine
- Lupinus shockleyi desert lupine
- Lupinus sparsiflorus coulter's lupine
- Lupinus spectabilis shaggyhair lupine
- Lupinus stiversii harlequin lupine
- Lupinus succulentus arroyo lupine
- Lupinus tidestromii tidestrom's lupine
- Lupinus tracyi tracy's lupine
- Lupinus uncialis lilliput lupine
- Lychnis coronaria rose campion
- Lycium barbarum matrimony vine
- Lycium brevipes santa catalina island desert-thorn
- Lycium californicum california box-thorn
- Lycium parishii parish's desert-thorn
- Lycium verrucosum san nicolas island desert-thorn
- Lycopersicon esculentum tomato
- Lycopodiella inundata inundated bog club-moss
- Lycopodium clavatum running-pine
- Lycopus uniflorus northern bugleweed
- Lyonothamnus floribundus santa cruz island ironwood
- Lyonothamnus floribundus santa catalina island ironwood
- Lyrocarpa coulteri coulter's lyrepod
- Lysichiton americanus yellow skunk-cabbage
- Lysimachia arvensis scarlet pimpernel
- Lysimachia europaea arctic starflower
- Lysimachia latifolia pacific starflower
- Lysimachia maritima sea milkwort
- Lysimachia minima chaffweed
- Lysimachia monelli flaxleaf pimpernel
- Lysimachia nummularia creeping-jenny
- Lysimachia thyrsiflora tufted loosestrife
- Lythrum californicum california loosestrife
- Lythrum salicaria purple loosestrife
- Madia elegans common madia
- Madia glomerata mountain tarweed
- Madia gracilis gumweed
- Madia radiata showy golden madia
- Madia sativa coast tarweed
- Malacothamnus abbottii abbott's bush-mallow
- Malacothamnus aboriginum indian valley bush-mallow
- Malacothamnus clementinus san clemente island bush-mallow
- Malacothamnus davidsonii davidson's bush-mallow
- Malacothamnus fasciculatus santa catalina island bush-mallow
- Malacothamnus fasciculatus santa cruz island bush-mallow
- Malacothamnus fasciculatus chaparral mallow
- Malacothamnus hallii hall's bush-mallow
- Malacothamnus jonesii jones' bush-mallow
- Malacothamnus palmeri carmel valley bush-mallow
- Malacothamnus palmeri santa lucia bush-mallow
- Malacothrix coulteri snake's-head
- Malacothrix foliosa wavy-leaved malacothrix
- Malacothrix foliosa leafy malacothrix
- Malacothrix foliosa philbrick's malacothrix
- Malacothrix foliosa many-headed malacothrix
- Malacothrix glabrata desert dandelion
- Malacothrix incana dunedelion
- Malacothrix indecora santa cruz island malacothrix
- Malacothrix junakii junak's malacothrix
- Malacothrix phaeocarpa dusky-fruited malacothrix
- Malacothrix saxatilis carmel valley malacothrix
- Malacothrix saxatilis cliff malacothrix
- Malacothrix similis mexican malacothrix
- Malacothrix squalida island malacothrix
- Malaxis monophyllos white bog adder's-mouth
- Malosma laurina laurel sumac
- Malperia tenuis brown turbans
- Malus fusca oregon crab apple
- Malus pumila apple
- Malva arborea tree mallow
- Malva assurgentiflora island mallow
- Malva neglecta common mallow
- Malva nicaeensis bull mallow
- Malva parviflora cheeseweed little mallow
- Malva pseudolavatera cretan mallow
- Malva sylvestris high mallow
- Malva verticillata crisped mallow curled mallow
- Malvella leprosa alkali-mallow white-weed
- Mammillaria grahamii graham's fishhook cactus
- Marah fabacea california man-root
- Marah horrida sierra man-root
- Marah macrocarpa chilicothe
- Marah oregana coast man-root
- Marah watsonii taw man-root
- Marina orcuttii california marina
- Matelea parvifolia spearleaf
- Matricaria chamomilla german chamomile
- Matricaria discoidea pineapple weed rayless chamomile
- Matricaria occidentalis valley mayweed
- Maurandella antirrhiniflora violet twining snapdragon
- Mauranthemum paludosum mini-marguerite
- Maytenus boaria maiten tree
- Meconella oregana oregon meconella
- Medicago arabica burclover spotted burclover
- Medicago lupulina black medick
- Medicago minima burclover
- Medicago polymorpha california burclover
- Medicago rigidula tifton medick tifton burclover
- Medicago sativa alfalfa
- Medicago scutellata snail medick
- Medicago truncatula barrel medick barrel clover
- Melaleuca citrina crimson bottlebrush
- Melaleuca viminalis weeping bottlebrush
- Melia azedarach china berry persian lilac
- Melica aristata awned melic
- Melica bulbosa oniongrass
- Melica californica california melic
- Melica frutescens woody melic
- Melica fugax little melic
- Melica geyeri geyer's oniongrass
- Melica imperfecta little california melica
- Melica spectabilis purple oniongrass
- Melica stricta rock melic
- Melica subulata alaskan oniongrass
- Melica torreyana torrey's melic
- Melilotus albus white sweetclover
- Melilotus indicus sourclover
- Melilotus officinalis yellow sweetclover
- Melinis repens natal grass ruby grass
- Melissa officinalis lemon balm
- Menodora scabra rough menodora
- Mentha ×gracilis scotch spearmint
- Mentha ×piperita peppermint
- Mentha ×rotundifolia apple mint
- Mentha ×smithiana redstem mint
- Mentha ×villosa apple mint
- Mentha aquatica watermint
- Mentha arvensis field mint
- Mentha canadensis american cornmint japanese peppermint
- Mentha pulegium pennyroyal
- Mentha spicata spearmint
- Mentha suaveolens pineapple mint
- Mentzelia eremophila solitary blazing star
- Mentzelia hirsutissima hairy stickleaf
- Mentzelia inyoensis inyo blazing star
- Mentzelia polita polished blazing star
- Mentzelia pterosperma wing-seed blazing star
- Mentzelia puberula darlington's blazing star
- Mentzelia torreyi torrey's blazing star
- Mentzelia tricuspis spiny-hair blazing star
- Mentzelia tridentata creamy blazing star
- Menziesia ferruginea mock azalea
- Mertensia bella oregon lungwort
- Mertensia ciliata streamside bluebell
- Mertensia cusickii toiyabe bluebells
- Mertensia longiflora long bluebells
- Mertensia oblongifolia beautiful sagebrush bluebells
- Mertensia oblongifolia sagebrush bluebells
- Mertensia oblongifolia sagebrush bluebell
- Mesembryanthemum crystallinum crystalline iceplant
- Mesembryanthemum nodiflorum slender-leaved iceplant
- Micranthes howellii howell's saxifrage
- Micromonolepis pusilla dwarf monolepis
- Micropus amphibolus mount diablo cottonseed
- Micropus californicus cottontop
- Micropus californicus q-tips
- Microseris borealis northern microseris
- Microseris douglasii small-flowered microseris
- Microseris laciniata detling's silverpuffs
- Microseris paludosa marsh microseris
- Microseris sylvatica sylvan microseris
- Mimulus clevelandii cleveland's bush monkeyflower
- Mimulus cusickii cusick's monkeyflower
- Mimulus evanescens ephemeral monkeyflower
- Mimulus exiguus san bernardino mountains monkeyflower
- Mimulus filicaulis slender-stemmed monkeyflower
- Mimulus fremontii vandenberg monkeyflower
- Mimulus glaucescens shield-bracted monkeyflower
- Mimulus gracilipes slender-stalked monkeyflower
- Mimulus inconspicuus small-flowered monkeyflower
- Mimulus johnstonii johnston's monkeyflower
- Mimulus laciniatus cut-leaved monkeyflower
- Mimulus mohavensis mojave monkeyflower
- Mimulus moschatus musk monkeyflower
- Mimulus norrisii kaweah monkeyflower
- Mimulus nudatus bare monkeyflower
- Mimulus parryi parry's monkeyflower
- Mimulus pictus calico monkeyflower
- Mimulus pulchellus yellow-lip pansy monkeyflower
- Mimulus purpureus little purple monkeyflower
- Mimulus pygmaeus egg lake monkeyflower
- Mimulus rupicola death valley monkeyflower
- Mimulus shevockii kelso creek monkeyflower
- Mimulus traskiae santa catalina island monkeyflower
- Minuartia californica california sandwort
- Minuartia cismontana cismontane minuartia
- Minuartia decumbens the lassics sandwort
- Minuartia douglasii douglas' stitchwort
- Minuartia howellii howell's sandwort
- Minuartia nuttallii nuttall's sandwort
- Minuartia obtusiloba alpine sandwort
- Minuartia pusilla annual sandwort
- Minuartia rosei peanut sandwort
- Minuartia rubella reddish sandwort
- Minuartia stolonifera scott mountain sandwort
- Minuartia stricta bog sandwort
- Mirabilis coccinea red four o'clock
- Mirabilis greenei greene's four o'clock
- Mirabilis laevis wishbone bush
- Mirabilis tenuiloba slender-lobed four o'clock
- Modiola caroliniana modiola
- Moehringia macrophylla large-leaved sandwort
- Moenchia erecta upright chickweed
- Mohavea confertiflora ghost flower
- Monarda pectinata plains bee balm
- Monardella australis gray monardella
- Monardella australis jokerst's monardella
- Monardella beneolens sweet-smelling monardella
- Monardella breweri mustang mint
- Monardella candicans sierra monardella
- Monardella follettii follett's monardella
- Monardella hypoleuca felt-leaved monardella
- Monardella leucocephala merced monardella
- Monardella linoides tehachapi monardella
- Monardella macrantha hall's monardella
- Monardella odoratissima coyote-mint
- Monardella palmeri palmer's monardella
- Monardella pringlei pringle's monardella
- Monardella purpurea siskiyou monardella
- Monardella robisonii robison's monardella
- Monardella saxicola rock monardella
- Monardella stebbinsii stebbins' monardella
- Monardella stoneana jennifer's monardella
- Monardella undulata crisp monardella
- Monardella undulata san luis obispo monardella
- Monardella venosa veiny monardella
- Monardella villosa coyote-mint
- Monardella viminea willowy monardella
- Monardella viridis green monardella
- Moneses uniflora woodnymph
- Monolepis nuttalliana nuttall's poverty weed
- Monolopia congdonii san joaquin woollythreads
- Monolopia gracilens woodland woollythreads
- Monolopia lanceolata common hillside daisy
- Monotropa hypopitys pinesap
- Monotropa uniflora ghost-pipe
- Montia chamissoi toad lily
- Montia fontana water chickweed blinks
- Montia howellii howell's montia
- Morella californica wax myrtle
- Mortonia utahensis utah mortonia
- Morus alba white mulberry
- Mucronea californica california spineflower
- Mucronea perfoliata perfoliate spineflower
- Muehlenbeckia complexa maidenhair vine
- Muehlenbeckia hastulata wirevine
- Muhlenbergia alopecuroides wolftail
- Muhlenbergia andina foxtail muhly
- Muhlenbergia appressa appressed muhly
- Muhlenbergia arsenei tough muhly
- Muhlenbergia asperifolia scratch grass
- Muhlenbergia californica california muhly
- Muhlenbergia filiformis pull-up muhly
- Muhlenbergia fragilis delicate muhly
- Muhlenbergia jonesii jones' muhly
- Muhlenbergia microsperma littleseed muhly
- Muhlenbergia montana mountain muhly
- Muhlenbergia pauciflora few-flowered muhly
- Muhlenbergia richardsonis mat muhly
- Muhlenbergia rigens deer grass
- Muhlenbergia schreberi nimblewell
- Muhlenbergia utilis aparejo grass
- Muilla coronata crowned muilla
- Muilla maritima common muilla
- Munroa squarrosa false buffalograss
- Munzothamnus blairii blair's munzothamnus
- Myoporum laetum myoporum ngaio tree
- Myosotis discolor changing forget-me-not
- Myosotis latifolia broadleaved forget-me-not
- Myosotis laxa bay forget-me-not
- Myosotis micrantha small-flowered forget-me-not
- Myosotis scorpioides water forget-me-not
- Myosotis verna early forget-me-not
- Myrica hartwegii sierra sweet bay
- Myriophyllum aquaticum parrot's feather
- Myriophyllum hippuroides western water-milfoil
- Myriophyllum quitense andean water-milfoil
- Myriophyllum sibiricum siberian water-milfoil
- Myriophyllum spicatum eurasian water-milfoil
- Myriophyllum verticillatum whorled water-milfoil
- Myriopteris clevelandii cleveland's lip fern
- Myriopteris cooperae cooper's lip fern
- Myriopteris covillei coville's lip fern
- Myriopteris gracilis slender lip fern
- Myriopteris gracillima lace lip fern
- Myriopteris intertexta coastal lip fern
- Myriopteris newberryi newberry's lip fern
- Myriopteris parryi parry's lip fern
- Myriopteris viscida viscid lace fern
- Myriopteris wootonii wooton's lip fern
- Myrtus communis myrtle
- Najas flexilis slender water-nymph
- Najas gracillima thread-leaved water-nymph
- Najas graminea rice-field water-nymph
- Najas guadalupensis common water-nymph
- Najas marina holly-leaved water-nymph
- Nama dichotoma forked purple mat
- Nama stenocarpa mud nama
- Narcissus pseudonarcissus daffodil
- Narcissus tazetta paper white
- Nasturtium gambelii gambel's water cress
- Nasturtium officinale water cress
- Navarretia cotulifolia cotula navarretia
- Navarretia divaricata mountain navarretia
- Navarretia eriocephala hoary navarretia
- Navarretia fossalis spreading navarretia
- Navarretia gowenii lime ridge navarretia
- Navarretia heterandra tehama navarretia
- Navarretia jepsonii jepson's navarretia
- Navarretia leucocephala baker's navarretia
- Navarretia leucocephala few-flowered navarretia
- Navarretia leucocephala many-flowered navarretia
- Navarretia linearifolia pinnate-leaved navarretia
- Navarretia myersii small pincushion navarretia
- Navarretia myersii pincushion navarretia
- Navarretia nigelliformis adobe navarretia
- Navarretia nigelliformis shining navarretia
- Navarretia ojaiensis ojai navarretia
- Navarretia peninsularis baja navarretia
- Navarretia prolifera yellow bur navarretia
- Navarretia prostrata prostrate vernal pool navarretia
- Navarretia rosulata marin county navarretia
- Navarretia setiloba piute mountains navarretia
- Navarretia squarrosa skunkweed
- Navarretia subuligera awl-leaved navarretia
- Navarretia tagetina marigold navarretia
- Nemacaulis denudata coast woolly-heads
- Nemacaulis denudata slender cottonheads
- Nemacladus calcaratus chimney creek nemacladus
- Nemacladus gracilis slender nemacladus
- Nemacladus secundiflorus robbins' nemacladus
- Nemacladus secundiflorus large-flowered nemacladus
- Nemacladus twisselmannii twisselmann's nemacladus
- Nemophila breviflora great basin nemophila
- Nemophila maculata fivespot
- Nemophila menziesii baby blue-eyes
- Nemophila parviflora oak-leaved nemophila
- Neostapfia colusana colusa grass
- Nepeta cataria catnip
- Nerium oleander common oleander
- Neviusia cliftonii shasta snow-wreath
- Nicandra physalodes apple of peru shoo-fly plant
- Nicolletia occidentalis hole-in-the-sand plant
- Nicotiana glauca tree tobacco
- Nitrophila mohavensis amargosa nitrophila
- Noccaea fendleri kneeland prairie pennycress
- Nolina cismontana chaparral nolina
- Nolina interrata dehesa nolina
- Nothocalais alpestris alpine lake false-dandelion
- Nothocalais troximoides sagebrush false-dandelion
- Notholaena californica california cloak-fern
- Nuttallanthus texanus blue toadflax
- Nymphaea mexicana yellow or banana waterlily
- Nymphaea odorata fragrant or white waterlily
- Nymphoides peltata water fringe
- Oenothera biennis common evening-primrose
- Oenothera californica eureka dunes evening-primrose
- Oenothera cavernae cave evening-primrose
- Oenothera cespitosa cespitose evening-primrose
- Oenothera cespitosa fragrant evening-primrose
- Oenothera curtiflora lizard-tail velvet weed
- Oenothera deltoides antioch dunes evening-primrose
- Oenothera deltoides devil's lantern lion-in-a-cage basket evening-primrose
- Oenothera longissima long-stem evening-primrose
- Oenothera sinuosa wavy-leaved gaura
- Oenothera suffrutescens wild honeysuckle linda tarde
- Oenothera wolfii wolf's evening-primrose
- Olneya tesota ironwood
- Olsynium douglasii purple-eyed-grass grass widows
- Oncosiphon piluliferum stinknet
- Onobrychis viciifolia sanfoin
- Onopordum acanthium scotch thistle
- Onopordum illyricum illyrian thistle
- Onopordum tauricum taurian thistle
- Ophioglossum californicum california adder's-tongue
- Ophioglossum pusillum northern adder's-tongue
- Opuntia basilaris beavertail
- Opuntia basilaris short-joint beavertail
- Opuntia basilaris bakersfield cactus
- Opuntia chlorotica pancake prickly-pear
- Opuntia engelmannii engelmann prickly-pear
- Opuntia ficus-indica mission prickly-pear
- Opuntia fragilis brittle prickly-pear
- Opuntia leucotricha nopal duraznillo
- Opuntia microdasys bunny ears
- Opuntia phaeacantha brown-spined prickly-pear
- Opuntia polyacantha mojave prickly-pear grizzly bear prickly-pear
- Opuntia polyacantha porcupine prickly-pear
- Opuntia polyacantha starvation prickly-pear
- Opuntia robusta nopal tapon
- Orcuttia californica california orcutt grass
- Orcuttia inaequalis san joaquin valley orcutt grass
- Orcuttia pilosa hairy orcutt grass
- Orcuttia tenuis slender orcutt grass
- Orcuttia viscida sacramento orcutt grass
- Oreonana purpurascens purple mountain-parsley
- Oreonana vestita woolly mountain-parsley
- Oreostemma elatum tall alpine-aster
- Origanum ×majoricum italian oregano hardy sweet marjoram
- Origanum vulgare oregano
- Ornithopus sativus common birdsfoot
- Ornithostaphylos oppositifolia baja california birdbush
- Orobanche fasciculata clustered broomrape
- Orobanche parishii short-lobed broomrape
- Orobanche uniflora naked broomrape
- Orobanche valida howell's broomrape
- Orobanche valida rock creek broomrape
- Orthilia secunda one-sided wintergreen
- Orthocarpus cuspidatus siskiyou mountains orthocarpus
- Orthocarpus pachystachyus shasta orthocarpus
- Oryctes nevadensis nevada oryctes
- Osmadenia tenella osmadenia
- Osmorhiza depauperata blunt-fruited sweet-cicely
- Oxalis articulata windowbox wood-sorrel
- Oxalis bowiei bowie's wood-sorrel
- Oxalis californica california wood-sorrel
- Oxalis incarnata crimson wood-sorrel
- Oxalis micrantha dwarf wood-sorrel
- Oxalis oregana redwood sorrel
- Oxalis pes-caprae bermuda buttercup
- Oxalis purpurea purple wood-sorrel
- Oxalis suksdorfii suksdorf's wood-sorrel
- Oxytheca dendroidea tree-like puncturebract
- Oxytheca perfoliata round-leaf puncturebract
- Oxytheca watsonii watson's oxytheca
- Oxytropis borealis sticky oxytrope
- Oxytropis borealis boreal locoweed
- Oxytropis deflexa blue pendent-pod oxytrope
- Oxytropis oreophila rock-loving oxytrope
- Oxytropis parryi parry's oxytrope
- Packera bernardina san bernardino ragwort
- Packera bolanderi seacoast ragwort
- Packera breweri brewer's ragwort
- Packera cana woolly groundsel
- Packera clevelandii cleveland's ragwort
- Packera eurycephala widehead groundsel
- Packera eurycephala lewis rose's ragwort
- Packera ganderi gander's ragwort
- Packera greenei flame ragwort
- Packera hesperia western ragwort
- Packera indecora rayless mountain ragwort
- Packera ionophylla tehachapi ragwort
- Packera layneae layne's ragwort
- Packera macounii siskiyou mountains ragwort
- Packera multilobata lobeleaf groundsel
- Packera pauciflora alpine groundsel
- Packera pseudaurea false-gold groundsel
- Packera streptanthifolia rocky mountain groundsel
- Packera subnuda cleftleaf groundsel
- Packera werneriifolia hoary groundsel
- Palafoxia arida giant spanish-needle
- Pallenis maritima gold coin
- Panicum acuminatum pacific panic grass
- Panicum acuminatum geysers panicum
- Panicum antidotale blue panic grass
- Panicum capillare witch grass
- Panicum dichotomiflorum fall panic grass
- Panicum hillmanii hillman's panic grass
- Panicum hirticaule roughstalk witch grass
- Panicum miliaceum broom corn millet
- Panicum oligosanthes scribner's panic grass
- Panicum rigidulum redtop panicum
- Panicum urvilleanum silky panic grass
- Papaver californicum fire poppy
- Papaver heterophyllum wind poppy
- Papaver hybridum rough poppy
- Papaver rhoeas corn poppy
- Papaver somniferum opium poppy
- Parkinsonia aculeata mexican palo verde
- Parkinsonia florida blue palo verde
- Parkinsonia microphylla little-leaved palo verde
- Parnassia cirrata san bernardino grass-of-parnassus
- Parnassia cirrata cascade grass-of-parnassus
- Parnassia parviflora small-flowered grass-of-parnassus
- Paronychia ahartii ahart's nailwort ahart's paronychia
- Parthenocissus inserta woodbine
- Paspalum dilatatum dallis grass
- Paspalum distichum knot grass
- Paspalum vaginatum seashore paspalum
- Passiflora caerulea blue passion flower
- Passiflora tarminiana banana passion fruit
- Paxistima myrsinites oregon boxwood
- Pectis papposa chinch-weed
- Pectocarya heterocarpa mixed-nut pectocarya
- Pectocarya linearis narrow-toothed pectocarya
- Pectocarya penicillata northern pectocarya
- Pectocarya peninsularis baja pectocarya
- Pectocarya platycarpa wide-toothed pectocarya
- Pectocarya pusilla little pectocarya
- Pectocarya recurvata arched-nut pectocarya
- Pectocarya setosa round-nut pectocarya
- Pedicularis attollens little elephant's head
- Pedicularis bracteosa yellowish lousewort
- Pedicularis centranthera great basin lousewort
- Pedicularis contorta curved-beak lousewort
- Pedicularis crenulata scalloped-leaved lousewort
- Pedicularis densiflora warrior's plume
- Pedicularis dudleyi dudley's lousewort
- Pedicularis groenlandica elephant's head
- Pedicularis howellii howell's lousewort
- Pedicularis racemosa leafy lousewort
- Pediomelum castoreum beaver dam breadroot
- Peganum harmala african rue syrian rue
- Pelargonium ×hortorum fish geranium
- Pelargonium panduriforme oak-leaved geranium
- Pelargonium peltatum ivy geranium
- Pelargonium zonale horseshoe geranium
- Pellaea andromedifolia coffee fern
- Pellaea brachyptera sierra cliff-brake
- Pellaea breweri brewer's cliff-brake
- Pellaea bridgesii bridges' cliff-brake
- Pellaea mucronata bird's-foot fern
- Pellaea truncata spiny cliff-brake
- Peltandra virginica green arrow arum tuckahoe
- Pennisetum ciliare buffel grass
- Pennisetum clandestinum kikuyu grass
- Pennisetum setaceum crimson fountain grass
- Pennisetum villosum feathertop
- Penstemon albomarginatus white-margined beardtongue (group 4)
- Penstemon barnebyi barneby's beardtongue (group 4)
- Penstemon calcareus limestone beardtongue (group 4)
- Penstemon californicus california beardtongue (group 4)
- Penstemon centranthifolius scarlet bugler (group 4)
- Penstemon cinicola ash beardtongue (group 4)
- Penstemon clevelandii san jacinto beardtongue
- Penstemon deustus hot-rock penstemon (group 4)
- Penstemon filiformis thread-leaved beardtongue (group 2)
- Penstemon fruticiformis amargosa beardtongue
- Penstemon heterodoxus shasta beardtongue
- Penstemon janishiae janish's beardtongue
- Penstemon neotericus plumas county beardtongue (group 2)
- Penstemon newberryi sonoma beardtongue
- Penstemon pahutensis pahute beardtongue (group 1)
- Penstemon papillatus inyo beardtongue (group 2)
- Penstemon personatus closed-throated beardtongue
- Penstemon purpusii snow mountain beardtongue (group 2)
- Penstemon rattanii santa cruz mountains beardtongue
- Penstemon scapoides pinyon beardtongue
- Penstemon stephensii stephens' beardtongue (group 4)
- Penstemon sudans susanville beardtongue
- Penstemon thompsoniae thompson's beardtongue
- Penstemon thurberi thurber's beardtongue (group 4)
- Penstemon tracyi tracy's beardtongue (group 4)
- Penstemon utahensis utah beardtongue
- Pentachaeta aurea allen's pentachaeta
- Pentachaeta aurea golden-rayed pentachaeta
- Pentachaeta bellidiflora white-rayed pentachaeta
- Pentachaeta exilis san benito pentachaeta
- Pentachaeta fragilis fragile pentachaeta
- Pentachaeta lyonii lyon's pentachaeta
- Pentagramma pallida silverback fern
- Pentagramma triangularis goldback fern
- Perideridia bacigalupii bacigalupi's yampah
- Perideridia gairdneri gairdner's yampah
- Perideridia leptocarpa narrow-seeded yampah
- Perideridia parishii parish's yampah
- Perideridia pringlei adobe yampah
- Peritoma arborea bladderpod
- Peritoma jonesii jones' bee plant
- Peritoma lutea yellow bee plant
- Peritoma platycarpa golden bee plant
- Peritoma serrulata rocky mountain bee plant
- Perityle emoryi emory's rock daisy
- Perityle intricata desert rock daisy
- Perityle inyoensis inyo rock daisy
- Perityle megalocephala nevada rock daisy
- Perityle megalocephala small-leaved rock daisy
- Perityle villosa hanaupah rock daisy
- Persea americana avocado
- Persicaria amphibia water smartweed
- Persicaria hydropiper waterpepper
- Persicaria hydropiperoides false waterpepper
- Persicaria lapathifolia willow weed
- Persicaria maculosa lady's thumb
- Persicaria orientalis kiss-me-over-the-garden-gate
- Persicaria pensylvanica pinkweed
- Persicaria wallichii himalayan knotweed
- Petalonyx thurberi death valley sandpaper-plant
- Petasites frigidus western sweet coltsfoot
- Peteria thompsoniae spine-noded milkvetch
- Petradoria pumila rock-goldenrod
- Petroselinum crispum parsley
- Phacelia amabilis saline valley phacelia (group 2)
- Phacelia anelsonii aven nelson's phacelia (group 3)
- Phacelia argentea sand dune phacelia (group 1)
- Phacelia barnebyana barneby's phacelia (group 3)
- Phacelia campanularia desert bluebells (group 3)
- Phacelia coerulea sky-blue phacelia (group 3)
- Phacelia cookei cooke's phacelia (group 3)
- Phacelia exilis transverse range phacelia (group 3)
- Phacelia floribunda many-flowered phacelia (group 2)
- Phacelia greenei scott valley phacelia (group 3)
- Phacelia gymnoclada naked-stemmed phacelia (group 3)
- Phacelia insularis north coast phacelia
- Phacelia insularis northern channel islands phacelia
- Phacelia inundata playa phacelia (group 2)
- Phacelia inyoensis inyo phacelia (group 2)
- Phacelia keckii santiago peak phacelia (group 3)
- Phacelia leonis siskiyou phacelia (group 3)
- Phacelia minor wild canterbury bells (group 3)
- Phacelia mohavensis mojave phacelia (group 3)
- Phacelia monoensis mono county phacelia (group 2)
- Phacelia mustelina death valley round-leaved phacelia (group 3)
- Phacelia nashiana charlotte's phacelia (group 3)
- Phacelia novenmillensis nine mile canyon phacelia (group 3)
- Phacelia orogenes mountain phacelia (group 3)
- Phacelia parishii parish's phacelia (group 3)
- Phacelia peirsoniana peirson's phacelia (group 3)
- Phacelia perityloides jaeger's phacelia
- Phacelia phacelioides mount diablo phacelia (group 3)
- Phacelia pulchella goodding's phacelia (group 3)
- Phacelia sericea blue alpine phacelia (group 1)
- Phacelia stebbinsii stebbins' phacelia (group 3)
- Phacelia stellaris brand's star phacelia (group 2)
- Phacelia vallicola mariposa phacelia (group 3)
- Phalacroseris bolanderi bolander's mock dandelion
- Phalaris angusta timothy canary grass
- Phalaris aquatica harding grass
- Phalaris arundinacea reed canary grass
- Phalaris brachystachys short-spiked canary grass
- Phalaris californica california canary grass
- Phalaris canariensis canary grass
- Phalaris caroliniana carolina canary grass
- Phalaris coerulescens sunol grass
- Phalaris lemmonii lemmon's canary grass
- Phalaris minor little-seeded canary grass
- Phalaris paradoxa hood canary grass
- Phaseolus filiformis slender-stem bean
- Philadelphus lewisii wild mock orange
- Philadelphus microphyllus littleleaf mock orange
- Phleum alpinum alpine timothy mountain timothy
- Phleum pratense cultivated timothy
- Phlox dispersa high sierra phlox
- Phlox dolichantha big bear valley phlox
- Phlox hirsuta yreka phlox
- Phlox muscoides squarestem phlox
- Phoenix canariensis canary island palm
- Phoenix dactylifera date palm
- Pholisma sonorae sand food
- Pholistoma auritum arizona pholistoma
- Pholistoma auritum fiesta flower
- Phoradendron californicum desert mistletoe
- Phoradendron juniperinum juniper or incense cedar mistletoe
- Phoradendron leucarpum american mistletoe
- Phragmites australis common reed
- Phyllostachys aurea fishpole bamboo golden bamboo
- Physalis lobata lobed ground-cherry
- Physalis philadelphica tomatillo
- Physalis viscosa grape ground-cherry
- Physaria chambersii chambers' physaria
- Physaria kingii san bernardino mountains bladderpod
- Physaria ludoviciana silver bladderpod
- Physematium plummerae plummer's woodsia
- Physocarpus alternans nevada ninebark
- Phytolacca americana pokeweed
- Phytolacca heterotepala mexican pokeweed
- Phytolacca icosandra tropical pokeweed
- Picea breweriana brewer spruce
- Picea engelmannii engelmann spruce
- Picea sitchensis sitka spruce
- Pickeringia montana woolly chaparral pea
- Pickeringia montana chaparral pea
- Pilostyles thurberi thurber's pilostyles
- Pinguicula macroceras horned butterwort
- Pinus albicaulis whitebark pine
- Pinus attenuata knobcone pine
- Pinus balfouriana foxtail pine
- Pinus contorta bolander's beach pine
- Pinus contorta shore pine
- Pinus contorta lodgepole pine
- Pinus coulteri coulter pine
- Pinus edulis colorado pinyon
- Pinus flexilis limber pine
- Pinus jeffreyi jeffrey pine
- Pinus lambertiana sugar pine
- Pinus longaeva bristlecone pine
- Pinus monophylla singleleaf pinyon pine
- Pinus monticola western white pine
- Pinus muricata bishop pine
- Pinus ponderosa pacific ponderosa pine
- Pinus ponderosa north plateau ponderosa pine
- Pinus ponderosa washoe pine
- Pinus ponderosa ponderosa pine western yellow pine
- Pinus quadrifolia parry pinyon pine
- Pinus radiata monterey pine
- Pinus sabiniana gray ghost or foothill pine
- Pinus torreyana santa rosa island torrey pine
- Pinus torreyana torrey pine
- Piperia candida white-flowered rein-orchid
- Piperia colemanii coleman's rein-orchid
- Piperia cooperi chaparral rein-orchid
- Piperia elegans point reyes rein-orchid
- Piperia elegans coast piperia elegant piperia
- Piperia elongata chaparral orchid wood rein-orchid
- Piperia leptopetala narrow-petaled rein-orchid
- Piperia michaelii michael's rein-orchid
- Piperia transversa flat spurred piperia
- Piperia unalascensis alaska piperia slender-spire orchid
- Piperia yadonii yadon's rein-orchid
- Pisum sativum common pea
- Pittosporum tobira japanese pittosporum mock orange
- Pittosporum undulatum victorian box mock orange
- Pityopus californicus california pinefoot
- Plagiobothrys acanthocarpus adobe popcornflower
- Plagiobothrys arizonicus arizona popcornflower
- Plagiobothrys austiniae austin's spiny-nut popcornflower
- Plagiobothrys bracteatus bracted popcornflower
- Plagiobothrys canescens valley popcornflower
- Plagiobothrys canescens santa catalina popcornflower
- Plagiobothrys chorisianus choris' popcornflower
- Plagiobothrys chorisianus hickman's popcornflower
- Plagiobothrys chorisianus artist's popcornflower
- Plagiobothrys cognatus cognate popcornflower
- Plagiobothrys collinus california popcornflower
- Plagiobothrys collinus rough-stemmed popcornflower
- Plagiobothrys collinus san diego popcornflower
- Plagiobothrys collinus bear valley popcornflower
- Plagiobothrys cusickii cusick's popcornflower
- Plagiobothrys diffusus san francisco popcornflower
- Plagiobothrys distantiflorus madera popcornflower
- Plagiobothrys fulvus field popcornflower
- Plagiobothrys glaber hairless popcornflower
- Plagiobothrys glyptocarpus cedar ridge popcornflower
- Plagiobothrys glyptocarpus sculptured-nut popcornflower
- Plagiobothrys greenei greene's spiny-nut popcornflower
- Plagiobothrys hispidulus harsh popcornflower
- Plagiobothrys hispidus cascade popcornflower bristly popcornflower
- Plagiobothrys humistratus low popcornflower
- Plagiobothrys hystriculus bearded popcornflower
- Plagiobothrys infectivus dye popcornflower
- Plagiobothrys jonesii mojave popcornflower
- Plagiobothrys kingii northern great basin popcornflower
- Plagiobothrys kingii southern great basin popcornflower
- Plagiobothrys kingii great basin popcornflower
- Plagiobothrys leptocladus alkali plagiobothrys
- Plagiobothrys lithocaryus mayacamas popcornflower
- Plagiobothrys mollis petaluma popcornflower
- Plagiobothrys mollis creeping popcornflower soft popcornflower
- Plagiobothrys nitens shiny-nutlet popcornflower
- Plagiobothrys nothofulvus rusty popcornflower foothill snowdrops
- Plagiobothrys parishii parish's popcornflower
- Plagiobothrys reticulatus fort ross popcornflower
- Plagiobothrys reticulatus tracy's popcornflower
- Plagiobothrys salsus desert popcornflower
- Plagiobothrys scriptus scridgee's popcornflower
- Plagiobothrys shastensis shasta popcornflower
- Plagiobothrys stipitatus showy great valley popcornflower
- Plagiobothrys stipitatus great valley popcornflower
- Plagiobothrys strictus calistoga popcornflower
- Plagiobothrys tenellus pacific popcornflower
- Plagiobothrys tener serpentine popcornflower
- Plagiobothrys tener slender popcornflower
- Plagiobothrys torreyi chaparral popcornflower
- Plagiobothrys torreyi yosemite popcornflower
- Plagiobothrys torreyi high sierra popcornflower
- Plagiobothrys trachycarpus rough-nutlet popcornflower
- Plagiobothrys uncinatus hooked popcornflower
- Plagiobothrys undulatus wavy-stemmed popcornflower
- Plagiobothrys verrucosus forget-me-not popcornflower
- Plantago lanceolata english plantain
- Plantago major common plantain
- Platanthera dilatata white-flowered bog-orchid
- Platanthera sparsiflora sparse-flowered bog-orchid
- Platanthera stricta slender bog-orchid
- Platanthera yosemitensis yosemite bog-orchid
- Platanus ×hispanica london plane tree
- Platanus racemosa western sycamore
- Platystemon californicus cream cups
- Plecostachys serpyllifolia petite-licorice
- Plectritis congesta sea blush
- Pleiacanthus spinosus thorny skeletonweed
- Pleuropogon californicus davy's semaphore grass
- Pleuropogon hooverianus north coast semaphore grass
- Pleuropogon refractus nodding semaphore grass
- Pluchea odorata saltmarsh-fleabane
- Pluchea sericea arrow-weed
- Plumbago auriculata cape leadwort
- Poa abbreviata marsh's blue grass
- Poa abbreviata patterson's blue grass
- Poa abbreviata dwarf blue grass
- Poa annua annual blue grass
- Poa atropurpurea san bernardino blue grass
- Poa compressa canadian blue grass
- Poa confinis beach blue grass
- Poa cusickii skyline blue grass
- Poa diaboli diablo canyon blue grass
- Poa douglasii sand dune blue grass
- Poa fendleriana mutton grass
- Poa fendleriana long-tongue mutton grass
- Poa glauca timberline blue grass
- Poa infirma weak blue grass
- Poa kelloggii kellogg's blue grass
- Poa leptocoma bog blue grass
- Poa lettermanii letterman's blue grass
- Poa macrantha seashore blue grass
- Poa napensis napa blue grass
- Poa nemoralis wood blue grass
- Poa palustris fowl blue grass
- Poa piperi piper's blue grass
- Poa pratensis kentucky blue grass
- Poa rhizomata timber blue grass
- Poa secunda one-sided blue grass
- Poa secunda nevada blue grass
- Poa sierrae sierra blue grass
- Poa tenerrima delicate blue grass
- Poa trivialis rough blue grass
- Poa unilateralis san francisco blue grass
- Podistera nevadensis sierra podistera
- Pogogyne abramsii san diego mesa mint
- Pogogyne clareana santa lucia mint
- Pogogyne douglasii douglas' beardstyle
- Pogogyne floribunda profuse-flowered pogogyne
- Pogogyne nudiuscula otay mesa mint
- Pogogyne serpylloides thymeleaf beardstyle
- Pogogyne zizyphoroides sacramento beardstyle
- Polanisia dodecandra western clammyweed
- Polemonium carneum oregon polemonium
- Polemonium chartaceum mason's sky pilot
- Polemonium eddyense mount eddy sky pilot
- Poliomintha incana frosted mint
- Polycarpon tetraphyllum four-leaved allseed
- Polygala acanthoclada thorny milkwort
- Polygala californica california milkwort
- Polygala cornuta sierra milkwort
- Polygala cornuta fish's milkwort
- Polygala heterorhyncha notch-beaked milkwort
- Polygala intermontana intermountain milkwort
- Polygala subspinosa spiny milkwort
- Polygonum argyrocoleon persian knotweed
- Polygonum austiniae mrs. austin's knotweed
- Polygonum aviculare knotweed knotgrass
- Polygonum bidwelliae bidwell's knotweed
- Polygonum bolanderi bolander's knotweed
- Polygonum douglasii douglas' knotweed
- Polygonum hickmanii scotts valley polygonum
- Polygonum majus wiry knotweed
- Polygonum marinense marin knotweed
- Polygonum parryi parry's or prickly knotweed
- Polygonum polygaloides modoc county knotweed
- Polygonum polygaloides polygala knotweed
- Polygonum ramosissimum bushy knotweed
- Polypodium californicum california polypody
- Polypodium glycyrrhiza licorice fern
- Polypodium hesperium western polypody
- Polypodium scouleri leather-leaf fern
- Polypogon australis chilean beard grass
- Polypogon interruptus ditch beard grass
- Polypogon maritimus mediterranean beard grass
- Polypogon monspeliensis annual beard grass rabbitfoot grass
- Polypogon viridis water beard grass
- Polystichum kruckebergii kruckeberg's sword fern
- Polystichum lonchitis holly fern
- Polystichum munitum western sword fern
- Populus alba white poplar
- Populus angustifolia narrow-leaved cottonwood
- Populus fremontii alamo or fremont cottonwood
- Populus nigra black poplar lombardy poplar
- Populus tremuloides quaking aspen
- Populus trichocarpa black cottonwood
- Porophyllum gracile odora slender poreleaf
- Porophyllum ruderale yerba porosa
- Portulaca halimoides desert portulaca
- Portulaca oleracea purslane
- Potamogeton amplifolius broad-leaved pondweed
- Potamogeton crispus crisp-leaved pondweed
- Potamogeton diversifolius diverse-leaved pondweed
- Potamogeton epihydrus nuttall's ribbon-leaved pondweed
- Potamogeton foliosus fibrous pondweed
- Potamogeton foliosus leafy pondweed
- Potamogeton gramineus grass-leaved pondweed
- Potamogeton illinoensis shining pondweed
- Potamogeton natans floating-leaved pondweed
- Potamogeton nodosus long-leaved pondweed
- Potamogeton praelongus white-stemmed pondweed
- Potamogeton pusillus small pondweed
- Potamogeton richardsonii richardson's pondweed
- Potamogeton robbinsii robbins' pondweed
- Potamogeton zosteriformis eel-grass pondweed
- Potentilla anglica english cinquefoil
- Potentilla anserina common silverweed
- Potentilla anserina pacific silverweed
- Potentilla basaltica black rock potentilla
- Potentilla biennis biennial or greene's cinquefoil
- Potentilla breweri brewer's cinquefoil
- Potentilla bruceae bruce's cinquefoil
- Potentilla concinna early cinquefoil
- Potentilla cristae crested potentilla
- Potentilla drummondii drummond's cinquefoil
- Potentilla flabellifolia fan-foil fanleaf cinquefoil
- Potentilla glaucophylla blueleaf cinquefoil
- Potentilla gracilis slender cinquefoil
- Potentilla grayi gray's cinquefoil
- Potentilla hickmanii hickman's cinquefoil
- Potentilla jepsonii jepson's cinquefoil
- Potentilla millefolia feather cinquefoil
- Potentilla morefieldii morefield's cinquefoil
- Potentilla multijuga ballona cinquefoil
- Potentilla newberryi newberry's cinquefoil
- Potentilla norvegica norwegian or rough cinquefoil
- Potentilla pensylvanica prairie cinquefoil
- Potentilla pseudosericea mono cinquefoil
- Potentilla pulcherrima beautiful cinquefoil
- Potentilla recta sulphur cinquefoil
- Potentilla rimicola cliff cinquefoil
- Potentilla rivalis brook or river cinquefoil
- Potentilla uliginosa cunningham marsh cinquefoil
- Potentilla wheeleri wheeler's cinquefoil
- Poteridium annuum western burnet
- Poterium sanguisorba garden burnet
- Prenanthella exigua brightwhite
- Primula hendersonii mosquito bill(s) sailor caps
- Primula jeffreyi sierra shooting star
- Primula pauciflora beautiful shooting star
- Primula suffrutescens sierra primrose
- Primula tetrandra alpine shooting star
- Proboscidea althaeifolia desert unicorn-plant
- Prosartes parvifolia siskiyou bells
- Prosopis glandulosa honey mesquite
- Prosopis pubescens screw bean tornillo
- Prosopis strombulifera argentine screwbean
- Prunus andersonii desert peach
- Prunus cerasifera cherry plum
- Prunus dulcis almond
- Prunus emarginata bitter cherry
- Prunus eremophila mojave desert plum
- Prunus fasciculata sand almond
- Prunus fasciculata desert almond
- Prunus fremontii desert apricot
- Prunus ilicifolia islay holly-leafed cherry
- Prunus ilicifolia catalina cherry
- Prunus persica peach
- Prunus subcordata pacific plum sierra plum
- Prunus virginiana western choke cherry
- Psathyrotes ramosissima turtleback
- Pseudobahia bahiifolia hartweg's golden sunburst
- Pseudobahia heermannii foothill sunburst brittlestem
- Pseudobahia peirsonii san joaquin adobe sunburst
- Pseudognaphalium leucocephalum white rabbit-tobacco
- Pseudognaphalium macounii macoun's everlasting
- Pseudorontium cyathiferum deep canyon snapdragon
- Pseudostellaria jamesiana tuber starwort
- Pseudostellaria sierrae sierra starwort
- Pseudotrillium rivale brook wakerobin
- Pseudotsuga macrocarpa bigcone douglas-fir bigcone spruce
- Pseudotsuga menziesii douglas-fir
- Psilocarphus brevissimus dwarf woollyheads
- Psilocarphus brevissimus delta woolly-marbles
- Psilocarphus chilensis round woolly-marbles
- Psilocarphus elatior tall woolly-marbles
- Psilocarphus oregonus oregon woollyheads
- Psilocarphus tenellus slender woolly-marbles
- Psorothamnus arborescens mojave indigo-bush
- Psorothamnus fremontii narrow-leaved psorothamnus
- Psorothamnus fremontii fremont's dalea
- Psorothamnus schottii indigo-bush
- Psorothamnus spinosus smoke tree
- Pteris cretica cretan brake
- Pteris vittata ladder brake
- Pterocarya stenoptera chinese wingnut
- Puccinellia distans european alkali grass
- Puccinellia howellii howell's alkali grass
- Puccinellia lemmonii lemmon's alkali grass
- Puccinellia nutkaensis alaska alkali grass
- Puccinellia nuttalliana nuttall's alkali grass
- Puccinellia parishii parish's alkali grass
- Puccinellia pumila dwarf alkali grass
- Purshia stansburyana cliffrose
- Purshia tridentata bitterbrush
- Pyracantha angustifolia slender or woolly firethorn
- Pyracantha atalantioides sichuan firethorn
- Pyracantha coccinea firethorn or scarlet firethorn
- Pyracantha crenulata himalayan or nepal firethorn
- Pyracantha fortuneana chinese firethorn
- Pyracantha koidzumii taiwan firethorn
- Pyrola aphylla leafless wintergreen
- Pyrola asarifolia bog wintergreen
- Pyrola asarifolia long-bracted wintergreen
- Pyrola chlorantha green-flowered wintergreen
- Pyrola crypta cryptic wintergreen
- Pyrola dentata toothed wintergreen
- Pyrola minor lesser wintergreen
- Pyrola picta white-veined wintergreen
- Pyrrocoma apargioides alpine flames
- Pyrrocoma carthamoides large-flowered goldenweed
- Pyrrocoma hirta tacky goldenweed
- Pyrrocoma lanceolata lance-leaved goldenweed
- Pyrrocoma lucida sticky pyrrocoma
- Pyrrocoma racemosa del norte pyrrocoma
- Pyrrocoma racemosa pine pyrrocoma
- Pyrrocoma racemosa clustered goldenweed
- Pyrrocoma uniflora bear valley pyrrocoma
- Pyrrocoma uniflora plantain goldenweed
- Pyrus communis common pear
- Quercus ×macdonaldii macdonald oak
- Quercus agrifolia coast live oak encina
- Quercus berberidifolia scrub oak
- Quercus cedrosensis cedros island oak
- Quercus chrysolepis maul oak canyon live oak
- Quercus cornelius-mulleri muller's oak
- Quercus douglasii blue oak
- Quercus dumosa nuttall's scrub oak
- Quercus durata san gabriel oak
- Quercus durata leather oak
- Quercus engelmannii engelmann oak
- Quercus garryana oregon oak
- Quercus ilex holly oak
- Quercus john-tuckeri tucker's oak
- Quercus kelloggii california black oak
- Quercus lobata valley oak roble
- Quercus pacifica island scrub oak
- Quercus palmeri palmer's oak
- Quercus parvula santa cruz island oak
- Quercus parvula shreve oak
- Quercus parvula tamalpais oak
- Quercus robur english oak pedunculate oak
- Quercus sadleriana deer oak
- Quercus tomentella island oak
- Quercus turbinella shrub live oak
- Quercus vacciniifolia huckleberry oak
- Quercus wislizeni interior live oak
- Rafinesquia californica california chicory
- Rafinesquia neomexicana desert chicory
- Raillardella argentea silky raillardella
- Raillardella pringlei showy raillardella
- Ranunculus hydrocharoides frog's-bit buttercup
- Ranunculus lobbii lobb's aquatic buttercup
- Ranunculus macounii macoun's buttercup
- Raphanus raphanistrum jointed charlock
- Raphanus sativus radish
- Reseda alba white mignonette
- Reseda lutea yellow mignonette
- Reseda luteola dyer's rocket
- Reseda odorata garden mignonette
- Rhamnus alaternus italian buckhorn
- Rhamnus alnifolia alder buckthorn
- Rhamnus crocea spiny redberry
- Rhamnus ilicifolia hollyleaf redberry
- Rhamnus pirifolia island redberry
- Rhodiola integrifolia western roseroot
- Rhododendron columbianum western labrador tea
- Rhododendron macrophyllum california rhododendron
- Rhododendron occidentale california azalea
- Rhus aromatica skunk bush
- Rhus integrifolia lemonade berry
- Rhus ovata sugar bush
- Rhynchospora alba white beaked-rush
- Rhynchospora californica california beaked-rush
- Rhynchospora capitellata brownish beaked-rush
- Ribes amarum bitter gooseberry
- Ribes aureum golden currant
- Ribes binominatum trailing gooseberry
- Ribes bracteosum stink currant
- Ribes californicum hillside gooseberry
- Ribes canthariforme moreno currant
- Ribes cereum wax currant
- Ribes divaricatum parish's gooseberry
- Ribes divaricatum straggle bush
- Ribes hudsonianum western black currant
- Ribes indecorum white-flowering currant
- Ribes inerme white-stemmed gooseberry
- Ribes lacustre swamp currant
- Ribes lasianthum woolly-flowered gooseberry
- Ribes laxiflorum trailing black currant
- Ribes lobbii gummy gooseberry
- Ribes malvaceum chaparral currant
- Ribes marshallii marshall's gooseberry
- Ribes menziesii aromatic canyon gooseberry
- Ribes menziesii canyon gooseberry
- Ribes montigenum western prickly gooseberry
- Ribes nevadense mountain pink currant
- Ribes quercetorum oakwoods gooseberry
- Ribes roezlii hoary gooseberry
- Ribes roezlii sierran gooseberry
- Ribes sanguineum red-flowering currant
- Ribes sericeum santa lucia gooseberry
- Ribes speciosum fuchsia-flowered gooseberry
- Ribes thacherianum santa cruz island gooseberry
- Ribes tularense sequoia gooseberry
- Ribes viburnifolium santa catalina island currant
- Ribes victoris victor's gooseberry
- Ribes viscosissimum sticky currant
- Robinia neomexicana new mexico locust
- Robinia pseudoacacia black locust
- Romanzoffia tracyi tracy's romanzoffia
- Romneya coulteri coulter's matilija poppy
- Romneya trichocalyx hairy matilija poppy
- Rorippa austriaca austrian field-cress
- Rorippa columbiae columbia yellow cress
- Rorippa subumbellata tahoe yellow cress
- Rosa bridgesii sierran dwarf rose
- Rosa californica california rose
- Rosa canina dog rose
- Rosa gymnocarpa gasquet rose
- Rosa gymnocarpa wood rose
- Rosa minutifolia small-leaved rose
- Rosa multiflora multiflora rosa
- Rosa nutkana nootka rose
- Rosa pinetorum pine rose
- Rosa pisocarpa ahart rose
- Rosa pisocarpa cluster or pea rose
- Rosa pisocarpa cluster rose
- Rosa rubiginosa sweet-brier
- Rosa spithamea coast ground rose
- Rosa woodsii mojave rose
- Rosa woodsii interior rose
- Rubus armeniacus himalayan blackberry
- Rubus glaucifolius waxleaf raspberry
- Rubus laciniatus cutleaf blackberry
- Rubus lasiococcus roughfruit raspberry
- Rubus leucodermis whitebark raspberry
- Rubus nivalis snow dwarf bramble
- Rubus parviflorus thimbleberry
- Rubus spectabilis salmonberry
- Rubus ulmifolius elmleaf blackberry
- Rubus ursinus california blackberry
- Rudbeckia californica california cone-flower
- Rudbeckia glaucescens waxy cone-flower
- Rudbeckia hirta black-eyed susan
- Rudbeckia klamathensis klamath cone-flower
- Rudbeckia occidentalis western cone-flower
- Rumex acetosella sheep sorrel
- Rumex crispus curly dock
- Rumex fueginus golden dock
- Rumex hymenosepalus canaigre wild-rhubarb
- Rumex obtusifolius bitter dock
- Rumex occidentalis western dock
- Rumex pulcher fiddle dock
- Rumex salicifolius willow dock
- Rumex venosus winged dock
- Rupertia hallii hall's rupertia
- Rupertia rigida parish's rupertia
- Rytidosperma penicillatum hairy oat grass poverty grass
- Saccharum ravennae ravenna grass
- Sagina apetala dwarf pearlwort
- Sagina decumbens western pearlwort
- Sagina maxima thick-stemmed pearlwort
- Sagina procumbens matted pearlwort
- Sagina saginoides arctic pearlwort
- Sagina subulata scottish moss
- Sagittaria rigida sessile-fruited arrowhead
- Sagittaria sanfordii sanford's arrowhead
- Salix alba white willow
- Salix babylonica weeping willow
- Salix bebbiana bebb's willow
- Salix boothii booth's willow
- Salix brachycarpa short-fruited willow
- Salix breweri brewer's willow
- Salix delnortensis del norte willow
- Salix drummondiana drummond's willow
- Salix eastwoodiae sierra willow
- Salix exigua narrow-leaved willow coyote willow
- Salix exigua hinds' willow
- Salix geyeriana geyer's willow
- Salix gooddingii goodding's black willow
- Salix hookeriana coastal willow
- Salix jepsonii jepson's willow
- Salix laevigata red willow
- Salix lasiandra tail-leaf willow
- Salix lasiandra pacific willow
- Salix lasiolepis arroyo willow
- Salix lemmonii lemmon's willow
- Salix ligulifolia strap-leafed willow
- Salix lutea yellow willow
- Salix melanopsis dusky willow
- Salix nivalis snow willow
- Salix orestera gray-leafed sierra willow
- Salix petrophila rocky mountain willow
- Salix planifolia tea-leafed willow
- Salix prolixa mackenzie's willow
- Salix purpurea basket willow
- Salix scouleriana scouler's willow
- Salix sitchensis sitka willow
- Salix tracyi tracy's willow
- Salsola paulsenii barbwire russian thistle
- Salsola tragus russian thistle tumbleweed
- Saltugilia caruifolia caraway-leaved woodland-gilia
- Saltugilia latimeri latimer's woodland-gilia
- Saltugilia splendens splendid woodland-gilia
- Salvia aethiopis mediterranean sage
- Salvia apiana white sage
- Salvia brandegeei brandegee's sage
- Salvia carduacea thistle sage
- Salvia columbariae chia
- Salvia dorrii fleshy sage
- Salvia eremostachya desert sage
- Salvia funerea death valley sage
- Salvia greatae orocopia sage
- Salvia leucophylla purple sage
- Salvia mellifera black sage
- Salvia munzii munz's sage
- Salvia spathacea california hummingbird sage
- Salvia virgata meadow sage
- Sambucus nigra blue elderberry
- Sambucus racemosa black elderberry
- Sambucus racemosa red elderberry
- Samolus parviflorus seaside brookweed
- Sanguisorba officinalis great burnet
- Sanicula arctopoides footsteps of spring yellow mats
- Sanicula bipinnata poison sanicle
- Sanicula bipinnatifida purple sanicle shoe buttons
- Sanicula hoffmannii hoffmann's sanicle
- Sanicula maritima adobe sanicle
- Sanicula peckiana peck's sanicle
- Sanicula saxatilis rock sanicle
- Sanicula tracyi tracy's sanicle
- Santolina chamaecyparissus lavender-cotton
- Sanvitalia abertii abert's sanvitalia
- Saussurea americana american saw-wort
- Saxifraga cespitosa tufted saxifrage
- Scandix pecten-veneris venus' needle
- Sceptridium multifidum leather grape-fern
- Scheuchzeria palustris scheuchzeria
- Schinus molle pepper tree
- Schinus polygamus chilean pepper tree
- Schinus terebinthifolius brazilian pepper tree
- Schoenoplectus acutus common tule
- Schoenoplectus americanus olney's three-square bulrush
- Schoenoplectus californicus southern bulrush
- Schoenoplectus heterochaetus slender bulrush
- Schoenoplectus mucronatus rough-seed bulrush rice-field bulrush
- Schoenoplectus pungens common three-square bulrush
- Schoenoplectus saximontanus rocky mountain bulrush
- Schoenoplectus subterminalis water bulrush
- Schoenoplectus tabernaemontani soft-stem bulrush
- Schoenoplectus triqueter three-sided bulrush
- Schoenus nigricans black bog-rush
- Scirpus pendulus pendulous bulrush
- Sclerocactus johnsonii johnson's bee-hive cactus
- Sclerocactus polyancistrus mojave fishhook cactus
- Sclerochloa dura hardgrass fairground grass
- Scleropogon brevifolius burro grass
- Scopulophila rixfordii rixford rockwort
- Scorzonera hispanica spanish salsify viper's grass
- Scrophularia atrata black-flowered figwort
- Scrophularia californica california figwort
- Scrophularia villosa santa catalina figwort
- Scutellaria bolanderi southern mountains skullcap
- Scutellaria galericulata marsh skullcap
- Scutellaria lateriflora side-flowering skullcap
- Scutellaria mexicana bladder-sage
- Searsia lancea african sumac
- Sedella leiocarpa lake county stonecrop
- Sedum albomarginatum feather river stonecrop
- Sedum album white stonecrop
- Sedum divergens cascade stonecrop
- Sedum lanceolatum spearleaf stonecrop
- Sedum laxum red mountain stonecrop
- Sedum laxum pale-yellow stonecrop
- Sedum laxum heckner's stonecrop
- Sedum laxum roseflower stonecrop
- Sedum niveum davidson's stonecrop
- Sedum oblanceolatum applegate stonecrop
- Sedum obtusatum canyon creek stonecrop
- Sedum obtusatum sierra stonecrop
- Sedum oreganum oregon stonecrop
- Sedum oregonense cream stonecrop
- Sedum praealtum green cockscomb
- Sedum radiatum coast range stonecrop
- Sedum spathulifolium broadleaf stonecrop
- Selaginella asprella bluish spike-moss
- Selaginella cinerascens ashy spike-moss
- Selaginella eremophila desert spike-moss
- Selaginella leucobryoides mojave spike-moss
- Selaginella scopulorum rocky mountain spike-moss
- Senecio aphanactis chaparral ragwort
- Senecio aronicoides rayless ragwort
- Senecio astephanus san gabriel ragwort
- Senecio blochmaniae blochman's ragwort
- Senecio californicus california ragwort
- Senecio clarkianus clark's ragwort
- Senecio elegans red-purple ragwort
- Senecio flaccidus douglas' threadleaf ragwort
- Senecio flaccidus smooth threadleaf ragwort
- Senecio flaccidus threadleaf ragwort
- Senecio fremontii dwarf mountain ragwort
- Senecio fremontii western dwarf mountain ragwort
- Senecio glomeratus cutleaf burnweed
- Senecio hydrophiloides sweet marsh ragwort
- Senecio hydrophilus water ragwort alkali-marsh ragwort
- Senecio integerrimus columbia ragwort
- Senecio integerrimus lambs-tongue ragwort
- Senecio integerrimus pale-yellow ragwort
- Senecio jacobaea tansy ragwort
- Senecio linearifolius linear-leaved australian fireweed
- Senecio lyonii island senecio
- Senecio minimus coastal burnweed
- Senecio mohavensis mojave ragwort
- Senecio pattersonensis mount patterson senecio
- Senecio quadridentatus cotton burnweed
- Senecio scorzonella sierra ragwort
- Senecio serra tall ragwort sawtooth groundsel
- Senecio spartioides broom-like ragwort
- Senecio sylvaticus woodland ragwort
- Senecio triangularis arrowleaf ragwort
- Senecio vulgaris common groundsel
- Senegalia greggii catclaw devil's claw
- Senna armata spiny senna
- Senna artemisioides silver senna
- Senna covesii coues' cassia
- Senna marilandica maryland senna
- Sesbania herbacea bigpod sesbania coffee weed colorado river hemp
- Sesbania punicea scarlet sesban
- Sesuvium verrucosum western sea-purslane
- Setaria adhaerens bur bristle grass
- Setaria faberi chinese foxtail
- Setaria parviflora knotroot bristle grass
- Setaria pumila yellow bristle grass
- Setaria sphacelata african bristle grass
- Setaria verticillata hooked bristle grass
- Setaria viridis green bristle grass
- Shepherdia argentea buffalo-berry
- Shepherdia canadensis canadian buffalo-berry
- Sherardia arvensis field madder
- Sibara deserti desert winged rockcress
- Sibara filifolia santa cruz island rockcress
- Sibaropsis hammittii hammitt's clay-cress
- Sida rhombifolia sida rhombus-leaved sida
- Sida spinosa prickly sida
- Sidalcea asprella harsh checkerbloom sierra foothills checkerbloom
- Sidalcea asprella dwarf sierran checkerbloom
- Sidalcea calycosa vernal pool checkerbloom hogwallow checkerbloom
- Sidalcea calycosa point reyes checkerbloom
- Sidalcea calycosa vernal pool checkerbloom
- Sidalcea celata redding checkerbloom
- Sidalcea covillei owens valley checkerbloom
- Sidalcea diploscypha fringed checkerbloom
- Sidalcea elegans del norte checkerbloom
- Sidalcea gigantea giant checkerbloom
- Sidalcea glaucescens waxy checkerbloom
- Sidalcea hartwegii hartweg's checkerbloom
- Sidalcea hickmanii cuesta pass checkerbloom
- Sidalcea hickmanii hickman's checkerbloom
- Sidalcea hickmanii napa checkerbloom
- Sidalcea hickmanii parish's checkerbloom
- Sidalcea hickmanii lake pillsbury checkerbloom
- Sidalcea hickmanii marin checkerbloom
- Sidalcea hirsuta hairy checkerbloom
- Sidalcea keckii keck's checkerbloom
- Sidalcea malachroides maple-leaved checkerbloom
- Sidalcea malviflora chaparral checkerbloom california checkerbloom
- Sidalcea malviflora bear valley checkerbloom
- Sidalcea malviflora geranium-leaved checkerbloom
- Sidalcea malviflora siskiyou checkerbloom
- Sidalcea malviflora purple-stemmed checkerbloom
- Sidalcea malviflora seacliff checkerbloom
- Sidalcea malviflora checkerbloom checkermallow
- Sidalcea multifida cut-leaf checkerbloom
- Sidalcea neomexicana salt spring checkerbloom
- Sidalcea oregana coast checkerbloom
- Sidalcea oregana marsh checkerbloom
- Sidalcea oregana oregon checkerbloom
- Sidalcea oregana kenwood marsh checkerbloom
- Sidalcea pedata bird-foot checkerbloom
- Sidalcea robusta butte county checkerbloom
- Sidalcea setosa bristly checkerbloom
- Sidalcea sparsifolia southern checkerbloom
- Sidalcea stipularis scadden flat checkerbloom
- Sidotheca caryophylloides chickweed oxytheca
- Sidotheca emarginata white-margined oxytheca
- Sidotheca trilobata three-lobed starry puncturebract
- Silene antirrhina sleepy catchfly
- Silene aperta naked catchfly tulare campion
- Silene armeria sweet-william catchfly
- Silene bernardina palmer's catchfly
- Silene bolanderi bolander's catchfly
- Silene bridgesii bridges' catchfly
- Silene campanulata red mountain catchfly
- Silene campanulata bell catchfly
- Silene coniflora multinerved catchfly
- Silene conoidea large sand catchfly
- Silene dichotoma forked catchfly
- Silene douglasii douglas' catchfly
- Silene gallica small-flower catchfly windmill pink
- Silene grayi gray's catchfly
- Silene hookeri hooker's catchfly
- Silene invisa short-petaled campion
- Silene laciniata california pink
- Silene laciniata mexican pink
- Silene latifolia white campion
- Silene lemmonii lemmon's catchfly
- Silene marmorensis marble mountain campion
- Silene menziesii menzies' catchfly
- Silene noctiflora night-flowering catchfly
- Silene nuda sticky catchfly
- Silene occidentalis western campion
- Silene oregana oregon campion
- Silene parishii parish's catchfly
- Silene pendula drooping catchfly
- Silene salmonacea klamath mountain catchfly salmon-flowered catchfly
- Silene sargentii sargent's catchfly
- Silene scouleri scouler's catchfly
- Silene serpentinicola serpentine catchfly
- Silene suksdorfii cascade alpine campion suksdorf's catchfly
- Silene verecunda san francisco campion
- Silene vulgaris bladder campion
- Sinapis alba white mustard
- Sinapis arvensis charlock
- Sisymbrium altissimum tumble mustard
- Sisymbrium irio london rocket
- Sisymbrium officinale hedge mustard
- Sisyrinchium bellum western blue-eyed-grass
- Sisyrinchium californicum golden-eyed-grass
- Sisyrinchium elmeri elmer's blue-eyed-grass
- Sisyrinchium funereum death valley blue-eyed-grass
- Sisyrinchium halophilum nevada blue-eyed-grass
- Sisyrinchium hitchcockii hitchcock's blue-eyed-grass
- Sisyrinchium idahoense idaho blue-eyed-grass
- Sisyrinchium longipes timberland blue-eyed-grass
- Smilax jamesii english peak greenbrier
- Solanum carolinense carolina horse-nettle
- Solanum dimidiatum torrey's nightshade
- Solanum elaeagnifolium white horse-nettle
- Solanum lanceolatum lanceleaf nightshade
- Solanum marginatum white-margined nightshade
- Solanum nigrum black nightshade
- Solanum rostratum buffalo berry
- Solanum wallacei wallace's nightshade
- Solidago altissima late goldenrod
- Solidago confinis southern goldenrod
- Solidago elongata west coast canada goldenrod
- Solidago guiradonis guirado's goldenrod
- Solidago lepida western goldenrod
- Solidago multiradiata northern goldenrod
- Solidago spathulata coast goldenrod
- Solidago spectabilis showy goldenrod
- Solidago velutina california goldenrod
- Solidago velutina velvety goldenrod
- Sonchus arvensis perennial sow thistle
- Sonchus asper prickly sow thistle
- Sonchus oleraceus common sow thistle
- Sorbus aucuparia european mountain ash
- Sorbus californica california mountain ash
- Sorbus scopulina rocky mountain or cascade mountain ash
- Sorbus sitchensis dwarf or gray's mountain ash
- Sorbus sitchensis sitka mountain ash
- Sorghum bicolor sorghum
- Sorghum halepense johnson grass
- Sparaxis grandiflora butter cup
- Sparaxis tricolor harlequin flower
- Sparganium angustifolium narrow-leaved bur-reed
- Sparganium natans small bur-reed
- Spartina alterniflora salt-water cord grass
- Spartina densiflora dense-flowered cord grass
- Spartina foliosa california cord grass
- Spartina gracilis alkali cord grass
- Spartina patens salt-meadow cord grass
- Spartium junceum spanish broom
- Spergula arvensis stickwort starwort
- Spergularia atrosperma black seed sand-spurrey
- Spergularia bocconi boccone's sand-spurrey
- Spergularia canadensis western sand-spurrey
- Spergularia macrotheca sticky sand-spurrey
- Spergularia marina saltmarsh sand-spurrey
- Spergularia media greater sea-spurrey
- Spergularia platensis la plata sand-spurrey
- Spergularia rubra red sand-spurrey
- Spergularia villosa hairy sand-spurrey
- Spermolepis echinata bristly scaleseed
- Sphaeralcea ambigua apricot mallow
- Sphaeralcea ambigua parish mallow
- Sphaeralcea ambigua roughleaf apricot mallow
- Sphaeralcea angustifolia narrow-leaved globemallow
- Sphaeralcea coulteri coulter's globemallow
- Sphaeralcea emoryi emory's globemallow
- Sphaeralcea grossulariifolia gooseberry-leaved globemallow
- Sphaeralcea munroana munro's desert-mallow
- Sphaeralcea orcuttii carrizo mallow
- Sphaeralcea rusbyi rusby's desert-mallow
- Sphaeromeria cana gray chickensage
- Sphaeromeria potentilloides alkali tansy-sage
- Sphaeromeria potentilloides fivefinger chickensage
- Sphaerophysa salsula austrian peaweed
- Sphaeropteris cooperi cooper's tree fern
- Sphenopholis obtusata prairie wedge grass
- Sphenosciadium capitellatum swamp white heads ranger's buttons
- Sporobolus airoides alkali sacaton
- Sporobolus contractus spike dropseed
- Sporobolus cryptandrus sand dropseed
- Sporobolus flexuosus mesa dropseed
- Sporobolus indicus smut grass
- Sporobolus vaginiflorus poverty dropseed
- Sporobolus wrightii big sacaton
- Stachys pilosa prairie woundwort
- Stachys pycnantha short-spiked hedge nettle
- Stanleya viridiflora green-flowered prince's plume
- Staphylea bolanderi sierra bladdernut
- Stebbinsoseris decipiens santa cruz microseris
- Stebbinsoseris heterocarpa grassland silverpuffs
- Stellaria borealis sitka starwort
- Stellaria calycantha northern starwort
- Stellaria crispa crisp starwort
- Stellaria graminea common starwort
- Stellaria littoralis beach starwort
- Stellaria longifolia long-leaved starwort
- Stellaria longipes goldie's starwort
- Stellaria media common chickweed
- Stellaria neglecta greater chickweed
- Stellaria nitens shining chickweed
- Stellaria obtusa obtuse starwort rocky mountain starwort
- Stellaria pallida lesser chickweed
- Stellaria umbellata umbellate starwort
- Stemodia durantifolia purple stemodia
- Stenotaphrum secundatum saint augustine grass
- Stenotus acaulis stemless goldenweed
- Stenotus lanuginosus woolly stenotus
- Stephanomeria cichoriacea silver rock-lettuce chicoryleaf wire-lettuce
- Stephanomeria pauciflora wire-lettuce
- Stephanomeria tenuifolia narrow-leaved wire-lettuce
- Stipa arida mormon needle grass
- Stipa brachychaeta puna needle grass
- Stipa capensis cape rice grass
- Stipa cernua nodding needle grass
- Stipa chaetophora stipoid rice grass
- Stipa comata needle-and-thread
- Stipa coronata crested needle grass
- Stipa diegoensis san diego needle grass
- Stipa divaricata small-flowered rice grass
- Stipa exigua little rice grass
- Stipa hymenoides sand rice grass
- Stipa kingii king's rice grass
- Stipa latiglumis wide-glumed needle grass
- Stipa lemmonii lemmon's needle grass
- Stipa lepida foothill needle grass
- Stipa lettermanii letterman's needle grass
- Stipa manicata andean tussock grass
- Stipa mauritanica mauritanian grass
- Stipa miliacea smilo grass
- Stipa nelsonii mountain needle grass
- Stipa nevadensis nevada needle grass
- Stipa occidentalis california needle grass
- Stipa occidentalis western needle grass
- Stipa occidentalis common western needle grass
- Stipa pinetorum pinewoods needle grass
- Stipa pulchra purple needle grass
- Stipa purpurata bristly needle grass
- Stipa speciosa desert needle grass
- Stipa stillmanii stillman's needle grass
- Stipa thurberiana thurber's needle grass
- Stipa webberi webber's needle grass
- Streptanthus barbiger bearded jewelflower
- Streptanthus batrachopus tamalpais jewelflower
- Streptanthus bernardinus laguna mountains jewelflower
- Streptanthus callistus mount hamilton jewelflower
- Streptanthus campestris southern jewelflower
- Streptanthus cordatus piute mountains jewelflower
- Streptanthus diversifolius varied-leaved jewelflower
- Streptanthus drepanoides sickle-fruit jewelflower
- Streptanthus farnsworthianus farnsworth's jewelflower
- Streptanthus fenestratus tehipite valley jewelflower
- Streptanthus glandulosus metcalf canyon jewelflower
- Streptanthus glandulosus hoffman's bristly jewelflower
- Streptanthus glandulosus tiburon jewelflower
- Streptanthus glandulosus mount tamalpais bristly jewelflower
- Streptanthus glandulosus uncommon jewelflower
- Streptanthus gracilis alpine jewelflower
- Streptanthus hispidus mount diablo jewelflower
- Streptanthus howellii howell's jewelflower
- Streptanthus insignis arburua ranch jewelflower
- Streptanthus insignis san benito jewelflower
- Streptanthus longisiliquus long-fruit jewelflower
- Streptanthus oblanceolatus trinity river jewelflower
- Streptanthus oliganthus masonic mountain jewelflower
- Streptanthus polygaloides milkwort jewelflower
- Streptanthus tortuosus mountain jewelflower
- Streptanthus vernalis early jewelflower
- Stuckenia filiformis slender-leaved pondweed
- Stuckenia pectinata fennel-leaf pondweed
- Stuckenia striata nevada pondweed
- Stutzia covillei coville's orach
- Stylocline citroleum oil neststraw
- Stylocline gnaphaloides everlasting neststraw
- Stylocline intertexta mojave neststraw
- Stylocline masonii mason's neststraw
- Stylocline micropoides desert neststraw woollyhead fanbract
- Stylocline psilocarphoides peck neststraw
- Stylocline sonorensis mesquite neststraw
- Suaeda calceoliformis horned seablite
- Suaeda californica california seablite
- Suaeda esteroa estuary seablite
- Suaeda nigra bush seepweed
- Suaeda occidentalis western seablite
- Suaeda taxifolia woolly seablite
- Subularia aquatica water awlwort
- Swallenia alexandrae eureka valley dune grass
- Swertia perennis star swertia
- Syagrus romanzoffiana queen palm
- Symphoricarpos albus snowberry
- Symphoricarpos longiflorus fragrant snowberry
- Symphoricarpos mollis creeping snowberry trip vine
- Symphyotrichum defoliatum san bernardino aster
- Symphyotrichum greatae greata's aster
- Symphyotrichum hendersonii henderson's aster
- Symphyotrichum lentum suisun marsh aster
- Symphyotrichum spathulatum western bog aster
- Symphyotrichum subspicatum douglas aster
- Symphyotrichum subulatum annual saltmarsh aster
- Symphytum ×uplandicum russian comfrey
- Symphytum officinale comfrey
- Synthyris cordata serpentine snow queen
- Synthyris missurica kittentail
- Synthyris reniformis snow queen
- Syntrichopappus lemmonii lemmon's syntrichopappus
- Systenotheca vortriedei vortriede's spineflower
- Syzygium australe scrub cherry
- Tagetes erecta african or french marigold
- Tagetes minuta wild marigold
- Tamarix aphylla athel
- Tamarix chinensis fivestamen tamarisk
- Tamarix gallica french tamarisk
- Tamarix parviflora smallflower tamarisk
- Tamarix ramosissima saltcedar
- Tanacetum bipinnatum dune tansy
- Tanacetum parthenium feverfew
- Tanacetum vulgare common tansy
- Taraxacum californicum california dandelion
- Taraxacum ceratophorum horned dandelion
- Taraxacum erythrospermum red-seeded dandelion
- Taraxacum officinale common dandelion
- Tauschia glauca glaucous tauschia
- Tauschia howellii howell's tauschia
- Taxus brevifolia pacific yew
- Tetracoccus dioicus parry's tetracoccus
- Tetracoccus hallii hall's tetracoccus
- Tetracoccus ilicifolius holly-leaved tetracoccus
- Tetradymia argyraea striped horsebrush
- Tetradymia tetrameres dune horsebrush
- Tetragonia tetragonoides new zealand spinach
- Tetrapteron graciliflorum hill sun cup
- Teucrium cubense dwarf germander
- Teucrium glandulosum desert germander
- Thalictrum alpinum arctic meadow-rue
- Thelesperma megapotamicum rayless greenthread
- Thelypodium brachycarpum short-podded thelypodium
- Thelypodium howellii howell's thelypodium
- Thelypodium integrifolium foxtail thelypodium
- Thelypodium milleflorum many-flowered thelypodium
- Thelypodium stenopetalum slender-petaled thelypodium
- Thelypteris nevadensis nevada marsh fern
- Thelypteris puberula sonoran maiden fern
- Thermopsis californica silvery false-lupine
- Thermopsis californica velvety false-lupine
- Thermopsis macrophylla santa ynez false-lupine
- Thermopsis robusta robust false-lupine
- Thuja plicata western red cedar canoe cedar
- Thysanocarpus conchuliferus santa cruz island fringepod
- Tiarella trifoliata lace flower
- Tidestromia lanuginosa woolly tidestromia
- Tidestromia suffruticosa honeysweet
- Tiquilia canescens shrubby tiquilia
- Tiquilia nuttallii annual tiquilia
- Tiquilia palmeri palmer's tiquilia
- Tiquilia plicata fan-leaved tiquilia
- Tonestus eximius tahoe tonestus
- Tonestus lyallii lyall's tonestus
- Tonestus peirsonii peirson's tonestus
- Torilis arvensis tall sock-destroyer
- Torilis nodosa short sock-destroyer
- Torreya californica california-nutmeg
- Torreyochloa pallida weak manna grass
- Townsendia condensata cushion townsendia
- Townsendia leptotes slender townsendia
- Toxicodendron diversilobum western poison oak
- Tracyina rostrata beaked tracyina
- Tragia ramosa desert tragia
- Tragopogon dubius yellow salsify
- Tragopogon porrifolius salsify oyster plant
- Tragopogon pratensis meadow salsify
- Transberingia bursifolia virgate halimolobos
- Triadica sebifera chinese tallowtree
- Tricardia watsonii three hearts
- Trichocoronis wrightii wright's trichocoronis
- Trichophorum pumilum little bulrush
- Trichostema austromontanum hidden lake bluecurls
- Trichostema lanatum woolly blue curls
- Trichostema lanceolatum vinegar weed
- Trichostema laxum turpentine weed
- Trichostema micranthum small-flowered bluecurls
- Trichostema ovatum san joaquin bluecurls
- Trichostema rubisepalum hernandez bluecurls
- Trichostema ruygtii napa bluecurls
- Tridens muticus slim tridens
- Trifolium alexandrinum egyptian clover
- Trifolium amoenum two-fork clover
- Trifolium andersonii anderson's clover
- Trifolium andersonii beatley's five-leaved clover
- Trifolium angustifolium narrow-leaved clover
- Trifolium arvense rabbitfoot clover
- Trifolium aureum large hop clover
- Trifolium barbigerum bearded clover
- Trifolium beckwithii beckwith's clover
- Trifolium bifidum pinole clover
- Trifolium bolanderi bolander's clover
- Trifolium breweri brewer's clover
- Trifolium buckwestiorum santa cruz clover
- Trifolium campestre hop clover
- Trifolium cernuum nodding clover
- Trifolium ciliolatum foothill clover
- Trifolium cyathiferum bowl clover
- Trifolium depauperatum pale sack clover
- Trifolium depauperatum dwarf sack clover
- Trifolium depauperatum truncate sack clover
- Trifolium dubium little hop clover
- Trifolium eriocephalum hairy head clover
- Trifolium fragiferum strawberry clover
- Trifolium fucatum bull clover
- Trifolium glomeratum clustered clover
- Trifolium gracilentum pinpoint clover
- Trifolium grayi gray's clover
- Trifolium gymnocarpon plummer's clover
- Trifolium hirtum rose clover
- Trifolium howellii howell's clover
- Trifolium hybridum alsike clover
- Trifolium hydrophilum saline clover
- Trifolium incarnatum crimson clover
- Trifolium jokerstii butte county golden clover
- Trifolium kingii dedecker's clover
- Trifolium lemmonii lemmon's clover
- Trifolium longipes elmer's clover
- Trifolium longipes long-stalked clover
- Trifolium macraei macrae's clover
- Trifolium macrocephalum large-head clover
- Trifolium microcephalum small-head clover
- Trifolium microdon thimble clover
- Trifolium monanthum grant's carpet clover
- Trifolium monanthum carpet clover
- Trifolium monanthum small carpet clover
- Trifolium monanthum delicate carpet clover
- Trifolium obtusiflorum clammy clover
- Trifolium oliganthum few-flowered clover
- Trifolium olivaceum olive clover
- Trifolium palmeri southern island clover
- Trifolium polyodon pacific grove clover
- Trifolium pratense red clover
- Trifolium productum productive clover
- Trifolium repens white clover
- Trifolium resupinatum reversed clover
- Trifolium retusum teasel clover
- Trifolium siskiyouense siskiyou clover
- Trifolium striatum knotted clover
- Trifolium subterraneum subterranean clover
- Trifolium tomentosum woolly clover
- Trifolium trichocalyx monterey clover
- Trifolium variegatum small-flowered variegated clover
- Trifolium variegatum large variegated clover
- Trifolium variegatum variegated clover
- Trifolium vesiculosum arrowleaf clover
- Trifolium willdenovii tomcat clover
- Trifolium wormskioldii cow clover
- Triglochin concinna seaside arrow-grass
- Triglochin maritima common arrow-grass
- Triglochin palustris marsh arrow-grass
- Triglochin scilloides flowering-quillwort
- Triglochin striata three-ribbed arrow-grass
- Trillium chloropetalum giant trillium
- Trillium ovatum salmon mountains wakerobin
- Trillium ovatum white or western trillium
- Triphysaria eriantha butter-and-eggs johnny-tuck
- Triphysaria floribunda san francisco owl's-clover
- Tripleurospermum inodorum scentless mayweed false chamomile
- Tripterocalyx crux-maltae kellogg's sand-verbena
- Tripterocalyx micranthus small-flowered sand-verbena
- Trisetum canescens tall false oat
- Trisetum cernuum nodding false oat
- Trisetum projectum interrupted false oat
- Trisetum spicatum spike false oat
- Trisetum wolfii wolf's false oat
- Triteleia clementina san clemente island triteleia
- Triteleia grandiflora large-flowered triteleia
- Triteleia hyacinthina white brodiaea fool's onion
- Triteleia ixioides pretty face
- Triteleia ixioides cook's triteleia
- Triteleia ixioides golden brodiaea
- Triteleia laxa ithuriel's spear common triteleia
- Triteleia lugens dark-mouthed triteleia
- Triteleia montana mountain triteleia
- Triteleia peduncularis long-rayed brodiaea
- Tropaeolum majus garden nasturtium
- Tropidocarpum californicum kings gold
- Tropidocarpum capparideum caper-fruited tropidocarpum
- Tsuga heterophylla western hemlock
- Tsuga mertensiana mountain hemlock
- Tuctoria greenei greene's tuctoria
- Tuctoria mucronata crampton's tuctoria solano grass
- Tulipa clusiana tulip
- Typha angustifolia narrow-leaved cattail
- Typha domingensis southern cattail
- Typha latifolia broad-leaved cattail
- Ulmus americana american elm
- Ulmus minor english elm
- Ulmus parvifolia chinese elm lacebark elm
- Ulmus pumila siberian elm
- Urtica dioica american stinging nettle
- Urtica dioica hoary nettle
- Urtica urens dwarf nettle
- Utricularia intermedia flat-leaved bladderwort
- Utricularia macrorhiza common bladderwort
- Utricularia minor lesser bladderwort
- Utricularia ochroleuca cream-flowered bladderwort
- Vaccinium cespitosum dwarf bilberry
- Vaccinium deliciosum cascade bilberry
- Vaccinium macrocarpon cranberry
- Vaccinium membranaceum thinleaf huckleberry
- Vaccinium ovatum california huckleberry
- Vaccinium parvifolium red huckleberry
- Vaccinium scoparium little-leaved huckleberry
- Vaccinium uliginosum western blueberry
- Vachellia farnesiana sweet acacia
- Valeriana occidentalis western valerian
- Vancouveria chrysantha siskiyou inside-out-flower
- Vancouveria planipetala redwood ivy
- Ventenata dubia north africa grass
- Veratrum fimbriatum fringed false-hellebore
- Veratrum insolitum siskiyou false-hellebore
- Verbascum blattaria moth mullein
- Verbascum bombyciferum giant silver mullein
- Verbascum speciosum showy mullein
- Verbascum thapsus woolly mullein
- Verbascum virgatum wand mullein
- Verbena californica red hills vervain
- Verbesina dissita big-leaved crownbeard
- Verbesina encelioides golden crownbeard
- Veronica americana american brooklime
- Veronica anagallis-aquatica water speedwell
- Veronica catenata chain speedwell
- Veronica copelandii copeland's speedwell
- Veronica cusickii cusick's speedwell
- Veronica peregrina purslane speedwell
- Veronica persica persian speedwell
- Veronica scutellata marsh speedwell
- Veronica wormskjoldii american alpine speedwell
- Viburnum ellipticum oval-leaved viburnum
- Viburnum opulus cranberrybush
- Vicia americana american vetch
- Vicia benghalensis purple vetch
- Vicia bithynica bithynian vetch
- Vicia cracca bird vetch
- Vicia disperma two-seeded vetch
- Vicia faba fava bean broad bean horse bean
- Vicia gigantea giant vetch
- Vicia hassei slender vetch
- Vicia ludoviciana deerpea vetch
- Vicia lutea yellow vetch
- Vicia pannonica hungarian vetch
- Vicia sativa narrow-leaved vetch
- Vicia sativa spring vetch
- Vicia tetrasperma sparrow vetch
- Vicia villosa hairy vetch winter vetch
- Viguiera purisimae la purisima viguiera
- Vinca major greater periwinkle
- Viola adunca western dog violet early blue violet
- Viola arvensis field pansy european field-pansy wild pansy
- Viola bakeri baker's violet
- Viola beckwithii beckwith's violet great basin violet
- Viola cuneata northern two-eyed violet wedge-leaved violet
- Viola douglasii douglas' violet golden violet
- Viola glabella stream violet smooth yellow violet
- Viola hallii hall's violet wild pansy
- Viola howellii howell's violet
- Viola langsdorffii alaska violet langsdorff's violet
- Viola lobata pine violet yellow wood violet
- Viola macloskeyi macloskey's violet small white violet smooth white violet
- Viola nephrophylla leconte violet
- Viola ocellata western heart's ease two-eyed violet
- Viola odorata english violet sweet violet
- Viola palustris alpine marsh violet
- Viola pedunculata johnny-jump-up
- Viola pinetorum gray-leaved violet
- Viola pinetorum mountain yellow violet
- Viola praemorsa astoria violet yellow montane violet
- Viola primulifolia western white bog violet
- Viola purpurea golden violet
- Viola purpurea mountain violet
- Viola purpurea purple-marked yellow violet
- Viola sempervirens evergreen violet redwood violet
- Viola sheltonii shelton's violet
- Viola tomentosa felt-leaved violet
- Viscum album european mistletoe
- Vitis californica california wild grape
- Vitis girdiana desert wild grape
- Vitis rupestris rock grape
- Vitis vinifera wine grape
- Volutaria canariensis canary islands knapweed
- Volutaria muricata morocco knapweed
- Washingtonia filifera california fan palm
- Washingtonia robusta mexican fan palm
- Wigandia urens stinging wigandia
- Wislizenia refracta palmer's jackass-clover
- Wislizenia refracta jackass-clover
- Wolffia brasiliensis brazilian watermeal
- Woodwardia fimbriata giant chain fern
- Wyethia bolanderi bolander's mule's ears
- Wyethia elata hall's wyethia
- Wyethia invenusta rayless mule's ears
- Wyethia longicaulis humboldt county wyethia
- Wyethia ovata southern mule's ears
- Wyethia reticulata el dorado county mule ears
- Xanthisma gracile annual bristleweed
- Xanthisma junceum rush-like bristleweed
- Xanthisma spinulosum spiny goldenweed
- Xanthium spinosum spiny cocklebur
- Xanthium strumarium cocklebur
- Xylorhiza cognata mecca-aster
- Xylorhiza orcuttii orcutt's woody-aster
- Xylorhiza tortifolia mojave-aster
- Yucca baccata banana yucca blue yucca
- Yucca brevifolia joshua tree
- Yucca schidigera mojave yucca
- Zantedeschia aethiopica calla-lily
- Zeltnera arizonica arizona centaury
- Zeltnera davyi davy's centaury
- Zeltnera exaltata tall centaury desert centaury
- Zeltnera muehlenbergii monterey centaury
- Zeltnera namophila spring-loving centaury
- Zeltnera trichantha alkali centaury
- Zeltnera venusta california centaury charming centaury
- Zizania palustris interior wild rice northern wild rice
- Ziziphus obtusifolia graythorn
- Ziziphus parryi parry's jujube
- Ziziphus zizyphus jujube