Agoseris heterophylla

Agoseris heterophylla
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Agoseris
Species:	A. heterophylla
Binomial name
	Agoseris heterophylla; (Nutt.) Greene
Synonyms
	Synonymy Agoseris californica (Nutt.) Hoover ; Agoseris greeneana Kuntze ; Agoseris heterophylla (Nutt.) Jeps. ; Agoseris major Jeps. ex Greene ; Cryptopleura californica Nutt. ; Kymapleura heterophylla (Nutt.) Nutt. ex Torr. & A.Gray ; Microrhynchus californicus (Nutt.) Torr. & A.Gray ; Microrhynchus heterophyllus Nutt. ; Troximon elatum Greene ; Troximon heterophyllum (Nutt.) Greene ;

Agoseris heterophylla is a liguliferous species in the family Asteraceae known by the common name annual agoseris or mountain dandelion. It is widespread in mostly drier regions of western North America from British Columbia to Baja California.^[2]^[3]^[4]^[5]^[6]

Description

This is an annual herb producing a basal rosette of leaves. The oblanceolate leaves may be toothed, pinnatifid, or entire, and no larger than 15 cm long and 1.5 cm wide. Often there is no stem, or a short, rudimentary stem may develop, although the plant will produce several stem-like peduncles. Each solitary flower head contains one or two rows of sharp-pointed bracts, often with purplish hairs; and a corolla of yellow ray florets, but no disc florets. The fruit is an achene which can be highly variable but typically has a long beak and a terminal pappus of white bristles.^[2]^[7] Flowers bloom March to September.^[8]

Varieties^[2]

Agoseris heterophylla var. cryptopleura - California
Agoseris heterophylla var. heterophylla - British Columbia to Baja California (including Guadalupe Island)
Agoseris heterophylla var. quentinii - Arizona, New Mexico

References

^ The Plant List Agoseris heterophylla (Nutt.) Greene
^ ^a ^b ^c Flora of North America, Agoseris heterophylla
^ E-flora BC, electronic Atlas of the Flora of British Columbia
^ Biota of North America Program 2014 county distribution map
^ Calflora taxon report, University of California, Agoseris heterophylla (Nutt.) E. Greene Annual mountain dandelion, annual agoseris, mountain dandelion
^ Shreve, F. & I. L. Wiggins. 1964. Vegetation and Flora of the Sonoran Desert. 2 vols. Stanford University Press, Stanford.
^ Jepson Manual Treatment
^ "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org. Retrieved 2022-02-15.

External links

Media related to Agoseris heterophylla at Wikimedia Commons
Calflora Database: Agoseris heterophylla (Annual agoseris, Annual mountain dandelion)
USDA Plants Profile
Calphotos Photo gallery, University of California
Jepson Manual Treatment

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[1] The Plant List Agoseris heterophylla (Nutt.) Greene

[e-2] Flora of North America, Agoseris heterophylla

[3] E-flora BC, electronic Atlas of the Flora of British Columbia

[4] Biota of North America Program 2014 county distribution map

[5] Calflora taxon report, University of California, Agoseris heterophylla (Nutt.) E. Greene Annual mountain dandelion, annual agoseris, mountain dandelion

[6] Shreve, F. & I. L. Wiggins. 1964. Vegetation and Flora of the Sonoran Desert. 2 vols. Stanford University Press, Stanford.

[7] Jepson Manual Treatment

[8] "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org. Retrieved 2022-02-15.

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