Calflora
Taxon  Report   879    
Astragalus magdalenae  Greene  var. peirsonii  (Munz & J. McBurney) Barneby
Peirson's milk vetch,  Peirsons locoweed
Astragalus magdalenae var. peirsonii
© 2008 Jordan Zylstra
Photos from
CalPhotos / Calflora
Astragalus magdalenae var. peirsonii
© 2011 Duncan S. Bell
Astragalus magdalenae var. peirsonii, a dicot, is a perennial herb that is native to California, Arizona, Baja California.
CNPS Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).   8th Edition

It is listed by the State of California as Endangered and by the Federal Government as 'Threatened '.

Interactive Distribution Map


Observation Hotline
(observation details)



point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations



Bloom Period
Astragalus magdalenae var. peirsonii
© 2006 Andreas Chavez ID: 0000 0000 0206 0464 [detail] 2006 Andreas Chavez
Family: FABACEAE  
Genus: Astragalus
Parent: Astragalus magdalenae
Communities: Creosote Bush Scrub

Habitat: dunes

Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:
PLANTS: Astragalus peirsonii
More information about  Astragalus magdalenae var. peirsonii
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on PlantID.net   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation

USDA PLANTS Profile (ASMAP)

Search the International Plants Names Index

Search efloras.org (Flora of North America)

website references from Google


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2018. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: Dec 18, 2018).