CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record astragalus_magdalenae_var._peirsonii - Wed, Dec. 1, 2021, 23:18 ET b
Astragalus magdalenae var. peirsonii
common namePeirson's milk-vetch
CalPhotos image
more photos
© 2006 Andreas Chavez  Follow image link for photo data.
life formperennial herb
CA Rare Plant Rank
List 1B.2
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.2: Fairly endangered in California
state rank
S1      ranking system key
global rank
G3G4T2   G3G4: Intermediate between G3 and G4
Where did the "RED" code go?
CA state listingEndangered  11/79
federal listingThreatened  10/06/98
where found
MAPS - Use v8 link below.

Topographic quads (13):
Clyde (013B) 3211488, Cactus (013C) 3211478, Ogilby (013D) 3211477, Glamis (014A) 3211581, Glamis NW (014B) 3211582, Glamis SE (014D) 3211571, Acolita (027C) 3311512, East Of Acolita (027D) 3311511, Tortuga (028A) 3311523, Amos (028D) 3311513, Borrego Mountain (031B) 3311622, Borrego Sink (032A) 3311623, Clark Lake (047D)(*?) 3311633
quad data info

Counties, states, regions:
Imperial (IMP), San Diego (SDG)(*?), Arizona (AZ), Baja California (BA), Sonora - Mexico (SO)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Desert dunes (DeDns)
blooming period Dec-Apr  
elevation range60 - 225 meters
One location in Anza-Borrego does not appear to be a naturally occurring population; DNA analysis pending. Plant not seen in SDG Co. in several decades. Threatened by vehicles in the Algodones Dunes. Threatened elsewhere by vehicles, grazing and trampling, foot traffic, non-native plants, development, and hydrological alterations. See Bulletin of the Southern California Academy of Sciences 31:67 (1932) for original description, and Memoirs of the New York Botanical Garden 13:928 (1964) for taxonomic treatment.
full nameAstragalus magdalenae Greene var. peirsonii (Munz & McBurn.) Barneby
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  ASMAP Element Code  PDFAB0F532
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Wed, Dec. 1, 2021 from

pick and add to Plant Pressexplain the meaning of the fieldsFIRSTPREVIOUSNEXTLASTCNPS.ORGQuestions and CommentsHOMELOGIN (you are guest anonymous)   Web Oriented Database Home