CNPS

CNPS Rare Plant Inventory



Taxon Details

Astragalus bernardinus

San Bernardino milk-vetch

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Taxon Summary:

Astragalus bernardinus, commonly known as San Bernardino milk-vetch, is a perennial herb in the Fabaceae that is found only in California. It occurs within Joshua tree "woodland", and Pinyon and juniper woodland, growing at elevations from 900 to 2000 meters. Astragalus bernardinus is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

  Classification

Scientific Name:
Astragalus bernardinus M.E. Jones
Common Name:
San Bernardino milk-vetch
Family: Fabaceae
Element Code: PDFAB0F190
USDA Plants Symbol: ASBE4
Synonyms/Other Names:
Name Status: JEF, FNA, POWO,
IPNI, Tropicos

  Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G3
State Rank:
 S3
Other Status: BLM_S; SB_CalBG/RSABG; USFS_S
CRPR Changes:
added to 1B.2 on 2011-02-16
Add Date: 2011-02-16
Date Edited: 2023-05-02

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: Apr-Jun
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Elevation:
900 - 2000 meters
2955 - 6560 feet
General Habitats:
  • Joshua tree "woodland"
  • Pinyon and juniper woodland
Microhabitat Details:
Microhabitat:
  • Carbonate (often)
  • Granitic (often)

  Notes

Notes:
Historic report from the Charleston Mtns. of NV lacks documentation. Potentially threatened by mining, development, grazing, and recreational activities.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 1
Total EOs % of EOs
EOs with Threat Listed: 1 2 %
THREAT LIST:
Other 1 2%

  Occurrence Data from the CNDDB

Total Occurrences: 42
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 42
Occurrence Status:
Historical >20 Years 26
Recent <=20 Years 16
Presence:
Presumed Extant 42
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Riverside (RIV), San Bernardino (SBD)
Quads: Name (Quad Code)
Big Bear City (3411637), Bighorn Canyon (3411635), Castle Peaks (3511532), Cima (3511525), Cima Dome (3511535), Conejo Well (3311576), Cottonwood Spring (3311567), Cougar Buttes (3411647), East Deception Canyon (3311683), Fawnskin (3411638), Hayfield (3311566), Indian Cove (3411612), Joshua (3511534), Joshua Tree South (3411613), Keys View (3311682), Malapai Hill (3311681), Mescal Range (3511545), Mid Hills (3511524), Mineral Hill (3511544), Mortmar (3311558), Onyx Peak (3411626), Porcupine Wash (3311577), Queen Mtn. (3411611), Rattlesnake Canyon (3411636), Rimrock (3411625), Rockhouse Canyon (3311671), Yucca Valley North (3411624)
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.
Regional Map

  Map

Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

CNPS Status Review: Proposed New Add to Rank 4.2 1B.2, G3 / S3 (2011)

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Suggested Citation:
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].
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