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==External links==
==External links==
*[http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Astragalus+ertterae CalFlora Database: ''Astragalus ertterae'' (Walker Pass milk vetch)]
*[http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Astragalus+ertterae CalFlora Database: ''Astragalus ertterae'' (Walker Pass milk vetch)]
*[http://herbaria4.herb.berkeley.edu/eflora_display.php?tid=14821 Jepson Manual eFlora (TJM2) treatment - ''Astragalus ertterae'']
*[http://herbaria4.herb.berkeley.edu/eflora_display.php?tid=14821 Jepson Manual eFlora (TJM2) treatment - ''Astragalus ertterae'']{{dead link|date=October 2016 |bot=InternetArchiveBot |fix-attempted=yes }}
*[http://www.natureserve.org/explorer/servlet/NatureServe?searchName=Astragalus+ertterae The Nature Conservancy]
*[http://www.natureserve.org/explorer/servlet/NatureServe?searchName=Astragalus+ertterae The Nature Conservancy]
*[http://plants.usda.gov/java/profile?symbol=ASER6 USDA Plants Profile for ''Astragalus ertterae'' (Walker Pass milk vetch)]
*[http://plants.usda.gov/java/profile?symbol=ASER6 USDA Plants Profile for ''Astragalus ertterae'' (Walker Pass milk vetch)]
*[http://www.blm.gov/ca/pa/ssp/plants/astragalus_ertterae.html BLM Profile of ''Astragalus ertterae'']
*[https://web.archive.org/web/20090115174519/http://www.blm.gov/ca/pa/ssp/plants/astragalus_ertterae.html 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'']
*{http://calphotos.berkeley.edu/cgi-bin/img_query?where-taxon=Astragalus+ertterae&where-anno=1 UC Photos gallery — ''Astragalus ertterae'']



Revision as of 08:55, 20 October 2016

Walker Pass milkvetch

Critically Imperiled  (NatureServe)
Scientific classification
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A. ertterae
Binomial name
Astragalus ertterae
Barneby & Shevock

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.

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.