Species Details

Astragalus albens

Cushenbury milk-vetch

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Species Description:

Astragalus albens, commonly known as Cushenbury milk-vetch, is a perennial herb in the Fabaceae that is found only in California. It occurs within Joshua tree "woodland", Mojavean desert scrub, and Pinyon and juniper woodland, growing at elevations from 1095 to 2000 meters. Astragalus albens is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Lifeform: perennial herb
Blooming Period: Mar-Jun
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Elevation:
1095 - 2000 meters
3595 - 6560 feet
General Habitats:
  • Joshua tree "woodland"
  • Mojavean desert scrub
  • Pinyon and juniper woodland
Microhabitat Details:
Microhabitat:
  • Carbonate (usually)
  • Granitic (rarely)
Notes:
See Bulletin of the California Academy of Sciences 1:156 (1885) for original description, and Fremontia 16(1):20-21 (1988) for discussion of mining threats.
Threats:
Threatened by carbonate mining, grazing, energy development, road construction, and vehicles.
Taxonomy:
Threat List Total: 9
Total EOs % of EOs
EOs with Threat Listed: 18 78 %
THREAT LIST:
Mining 14 60%
ORV activity 9 39%
Road/trail construction/maint. 7 30%
Vandalism/dumping/litter 3 13%
Foot traffic/trampling 2 8%
Total Occurrences: 23
Element Occurrence Ranks:
A B C D X U
2 9 5 0 0 7
Occurrence Status:
Historical >20 Years 15
Recent <=20 Years 8
Presence:
Presumed Extant 23
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
San Bernardino (SBD)
Quads: Name (Quad Code)
Big Bear City (3411637), Cougar Buttes (3411647), Fawnskin (3411638), Rattlesnake Canyon (3411636)
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.
Presumed Extant
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