Biology:Astragalus ertterae
| Walker Pass milkvetch | |
|---|---|
| |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Genus: | Astragalus |
| Species: | A. ertterae
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| Binomial name | |
| Astragalus ertterae Barneby & Shevock
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Astragalus ertterae is a rare species of milkvetch known by the common name Walker Pass milkvetch. It is endemic to California , where it is known from only three occurrences near Walker Pass in the Sierra Nevada. It is endangered by trampling, trail use, and also grazing.[1]
It is only found in the northeast corner of Kern county, in the Sierra Nevada. It's bloom period is April and May.[2]
Description
Astragalus ertterae is hairy perennial herb with a stem no more than 10 centimeters long, much of which grows underground. There are 4 or 5 leaves which are a few centimeters long and made up of several oval-shaped leaflets. The dense inflorescence holds up to 17 cream-colored flowers, each about a centimeter long. The fruit is a swollen, hairless legume pod which dries to a leathery texture.
It is closely morphologically related to Astragalus bicristatus.[3]
References
- ↑ "Astragalus ertterae, Walker Pass milkvetch". https://www.fs.usda.gov/wildflowers/Rare_Plants/profiles/Critically_Imperiled/astragalus_ertterae/index.shtml.
- ↑ "Astragalus ertterae Calflora". https://www.calflora.org/app/taxon?crn=835.
- ↑ Barneby, Rupert; Shevock, James (1987-01-01). "Astralagus ertterae (Fabaceae), a New Species from the Southern Sierra Nevada". Aliso: A Journal of Systematic and Floristic Botany 11 (4): 585–588. doi:10.5642/aliso.19871104.13. ISSN 0065-6275. https://scholarship.claremont.edu/aliso/vol11/iss4/13.
External links
- CalFlora Database: Astragalus ertterae (Walker Pass milk vetch)
- Jepson Manual eFlora (TJM2) treatment - Astragalus ertterae[yes|permanent dead link|dead link}}]
- The Nature Conservancy[yes|permanent dead link|dead link}}]
- USDA Plants Profile for Astragalus ertterae (Walker Pass milk vetch)
- BLM Profile of Astragalus ertterae
- {http://calphotos.berkeley.edu/cgi-bin/img_query?where-taxon=Astragalus+ertterae&where-anno=1 UC Photos gallery — Astragalus ertterae]
Wikidata ☰ Q4811226 entry
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