CPC Plant Profile: Big Bear Valley Woollypod
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Plant Profile

Big Bear Valley Woollypod (Astragalus leucolobus)

Photo Credit: ©2006 Steve Matson
  • Global Rank: G2 - Imperiled
  • Legal Status: N/A
  • Family: Fabaceae
  • State: CA
  • Nature Serve ID: 144273
  • Date Inducted in National Collection: 09/18/2021

Astragalus leucolobus is a perennial herb with scattered occurrences across multiple mountain ranges (San Gabriel Mtns, San Bernardino Mtns, San Jacinto Mtns). At elevations between 6500-8000 ft, the Bear Valley Wooly-pod can be found in pebble-plain clearings in Yellow Pine or Pinyon-Juniper woodlands. A. leucolobus grows low to the ground (1-2 ft) into a dense shrub and its fuzzy sepals at the base of its flower especially characterize this species – hence the common name, “wooly-pod.” From these wooly-pods come magenta flowers that bloom during the summer months (May – July). Its habitat preferences do not recover well when disturbed, making A. leucolobus sensitive to most threats such as off-road vehicular activity and urbanization.   

Participating Institutions
  • 09/01/2020
  • Orthodox Seed Banking

Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 1 accessions of Astragalus leucolobus in orthodox seed collection. There are as many as 324 seeds of this species in their collection - although some may have been used for curation testing or sent to back up.

  • 08/05/2020
  • Seed Collection

Based on an August 2020 extract of the California Plant Rescue Database, California Botanic Garden has collected 1 seed accessions of Astragalus leucolobus from 1 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass 22 maternal plants

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Taxon Astragalus leucolobus
Authority S. Wats. ex M.E. Jones
Family Fabaceae
CPC Number 6070
ITIS 25562
Common Names Bear Valley Woolly-pod | Bear Valley milk-vetch | Big Bear Valley Woolly-pod | whitepod milkvetch | Bear Valley milkvetch | Bear Valley wooly-pod
Associated Scientific Names Astragalus leucolobus | Astragalus inflexus var. leucolobus | Astragalus leucolobus subsp. leucolobus | Astragalus purshii var. leucolobus | Phaca leucoloba | Xylophacos leucolobus
Distribution A. leucolobus are found growing across primarily in San Bernardino County as well as scattered occurrences in Riverside and Los Angeles counties. Within San Bernardino County, populations of A. leucolobus are concentrated in the Big Bear area including Big Bear Lake and Sugarloaf Mountain.
State Rank
State State Rank
California S2

A. leucolobus are found growing in yellow-pine or pinyon-juniper woodlands at elevations between 6500-8000 ft. In this woodland setting, they prefer pebble-plain clearings where they grow close to the ground.

Ecological Relationships

Common Name Name in Text Association Type Source InteractionID

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