Species Details

Astragalus magdalenae var. peirsonii

Peirson's milk-vetch

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Scientific Name:
Astragalus magdalenae Greene var. peirsonii (Munz & McBurn.) Barneby
Common Name:
Peirson's milk-vetch
Family: Fabaceae
Element Code: PDFAB0F532
USDA Plants Symbol: ASMAP
Synonyms/Other Names:
CA Rare Plant Rank: 1B.2
Fed List: FT (1998-10-06)
State List: CE (1979-11-01)
Global Rank: G3G4T1
State Rank:
S1
Other Status: SB_CalBG/RSABG
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2021-05-26
Lifeform: perennial herb
Blooming Period: Dec-Apr
Elevation:
60 - 225 meters
195 - 740 feet
General Habitat:
  • Desert dunes
General Micro Habitat:
Micro Habitat:
Notes:
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.
Threats:
Taxonomy:
Other:
Total Occurrences: 3
Element Occurrence Ranks:
A B C D X U
0 1 0 0 2 0
Occurrence Status:
Historical >20 Years 1
Recent <=20 Years 2
Presence:
Presumed Extant 1
Possibly Extirpated 1
Presumed Extirpated 1
California Endemic:
California Island:
States: Name (Code)
Arizona (AZ), Baja California (BA), California (CA), Sonora, Mexico (SO)
California Counties and Islands: Name (Code)
Imperial (IMP), San Diego (SDG)(?)
Quads: Name (Quad Code)
Grays Well (3211468), Grays Well NE (3211467), Acolita (3311512), Amos (3311513), Borrego Mountain (3311622), Borrego Sink (3311623), Cactus (3211478), Clark Lake (3311633)(?), Clyde (3211488), East of Acolita (3311511), Glamis (3211581), Glamis NW (3211582), Glamis SE (3211571), Tortuga (3311523)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Map

Presumed Extant
Counties   Quads