CNPS Inventory Plant Detail

Astragalus magdalenae var. peirsonii

Common Name:	Peirson's milk-vetch
Family:	Fabaceae
Synonyms:
Element Code:	PDFAB0F532
Full Name:	Astragalus magdalenae Greene var. peirsonii (Munz & McBurn.) Barneby
USDA PLANTS Symbol:	ASMAP

Biology
Lifeform: perennial herb Blooming Period: December - April Habitat: • Desert dunes

Rarity Status

CA Rare Plant Rank: 1B.2
Rare, threatened, or endangered in California and elsewhere
.2: Fairly endangered in California
Federal Listing Status: FT
Threatened (10/06/98)
State Listing Status: CE
Endangered (11/79)
State Rank: S2
S2: Imperiled.
Global Rank: G3G4T2
T2: Imperiled. G3: (species) Vulnerable. G4: (species) Apparently secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 3
Element Occurrence Ranks:

A B C D X U

0 1 0 0 2 0

Population Status:

Historic >20 yrs	Recent <=20 yrs
1	2

Presence:

Present Extant	Possibly Extirpated	Extirpated
1	1	1

Notes

Known in CA from fewer than 5 occurrences. 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.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 1974-01-01
Last Update: 2012-03-19

Location

Elevation: 60 - 225 meters

California Endemic: no

States: California, Arizona, Baja California, Sonora

California Counties and Islands: name (code)
Imperial (IMP), San Diego (SDG) (*?)

Quads: name (DWR code) USGS code
Clyde (013B) 32114H8, Cactus (013C) 32114G8, Ogilby (013D) 32114G7, Glamis (014A) 32115H1, Glamis NW (014B) 32115H2, Glamis SE (014D) 32115G1, Acolita (027C) 33115A2, East of Acolita (027D) 33115A1, Tortuga (028A) 33115B3, Amos (028D) 33115A3, Borrego Mountain (031B) 33116B2, Borrego Sink (032A) 33116B3, Clark Lake (047D)(*?) 33116C3

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

323

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Game: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

-115.25,33.0