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

2006 Andreas Chavez ID: 0000 0000 0206 0464 [detail] 2006 Andreas Chavez
Biology Glossary
Rarity Status Glossary
Occurrence Data from CDFW
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 3
  • Element Occurrence Ranks:
    A B C D X U
    0 1 0 0 2 0
  • Population Status:
    >20 yrs
    <=20 yrs
    1 2
  • Presence:
    Present Extant Possibly Extirpated Presumed Extirpated
    1 1 1
Notes Glossary
  • 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: 2017-04-20
Location Glossary
  • Elevation: 60 - 225 meters
  • California Endemic: no
  • Other States: Arizona, Baja California, Sonora
  • California Counties and Islands:   name (code)
    Imperial (IMP),  San Diego (SDG) (*?)
  • Quads:   name (DWR code) USGS code
    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
  • 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. This data should NOT be substituted for pre-project review or for on-site surveys.
Presumed Extant Presumed Extirpated or Unknown 323
Links to Leading Resources of Taxon Information
Suggested Citation
California Native Plant Society, Rare Plant Program. . Inventory of Rare and Endangered Plants of California (online edition, v8-03). Website http://www.rareplants.cnps.org [accessed ].

3211488=Clyde (013B) 3211488;3211478=Cactus (013C) 3211478;3211477=Ogilby (013D) 3211477;3211581=Glamis (014A) 3211581;3211582=Glamis NW (014B) 3211582;3211571=Glamis SE (014D) 3211571;3311512=Acolita (027C) 3311512;3311511=East of Acolita (027D) 3311511;3311523=Tortuga (028A) 3311523;3311513=Amos (028D) 3311513;3311622=Borrego Mountain (031B) 3311622;3311623=Borrego Sink (032A) 3311623;3311633=Clark Lake (047D)(*?) 3311633