Extriplex joaquinana
| Extriplex joaquinana | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Amaranthaceae |
| Genus: | Extriplex |
| Species: | E. joaquinana
|
| Binomial name | |
| Extriplex joaquinana | |
| Synonyms | |
|
Atriplex joaquinana A.Nelson | |
Extriplex joaquinana is a species known by the common name San Joaquin saltbush. It was formerly included in genus Atriplex.
Distribution
[edit]It is endemic to California,[1][2] where it grows in alkaline soils in the Sacramento-San Joaquin River Delta and adjacent parts of the Central Valley and eastern Central Coast Ranges.
Description
[edit]This is an annual herb growing erect to a maximum height near one meter. The leaves are 1 to 7 centimeters in length, often scaly, green to gray-green in color, and oval to triangular in shape. The leaves are mostly located lower on the erect plant; those further up the stem are reduced in size. The inflorescences of male flowers are dense, heavy spikes, and the female flowers are held in smaller clusters.
Systematics
[edit]The first publication of this taxon was in 1904 by Aven Nelson as Atriplex joaquinana A.Nelson (in: Proceedings of the Biological Society of Washington 17(12): 99).[3] (It has sometimes been wrongly spelled Atriplex joaquiniana). In 2010, after phylogenetic research, Elizabeth H. Zacharias classified it in a new genus Extriplex, as Extriplex joaquinana (A.Nelson) E.H.Zacharias.[4] Extriplex joaquinana belongs to the tribe Atripliceae in the subfamily Chenopodioideae of Amaranthaceae.[4]
References
[edit]- ^ Jepson Manual Treatment
- ^ Atriplex joaquiniana in Flora of North America
- ^ Extriplex joaquinana at Tropicos
- ^ a b Elizabeth H. Zacharias, Bruce G. Baldwin (2010): A Molecular Phylogeny of North American Atripliceae (Chenopodiaceae), with Implications for Floral and Photosynthetic Pathway Evolution. In: Systematic Botany 35(4), p.839-857. doi:10.1600/036364410X539907
External links
[edit]
- "Extriplex joaquinana". National Center for Biotechnology Information (NCBI).
- USDA Plants Profile for Atriplex joaquinana
- Atriplex joaquinana — UC Photo gallery
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