Species Details

Astragalus traskiae

Trask's milk-vetch

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Scientific Name:
Astragalus traskiae Eastw.
Common Name:
Trask's milk-vetch
Family: Fabaceae
Element Code: PDFAB0F910
USDA Plants Symbol: ASTR4
Synonyms/Other Names:
Lifeform: perennial herb
Blooming Period: Feb-Jul
Elevation:
5 - 245 meters
15 - 805 feet
General Habitat:
  • Coastal bluff scrub
  • Coastal dunes
  • Coastal scrub
General Micro Habitat:
Micro Habitat:
Notes:
Populations on SBR Isl. declined severely in the late 1980's. Possibly threatened by Navy activities on SNI Isl. See Proceedings of the California Academy of Sciences III 1:102 (1898) for original description, and Memoirs of the New York Botanical Garden 13:461-463 (1964) for taxonomic treatment.
Threats:
Taxonomy:
Other:
Total Occurrences: 15
Element Occurrence Ranks:
A B C D X U
0 13 0 0 0 2
Occurrence Status:
Historical >20 Years 13
Recent <=20 Years 2
Presence:
Presumed Extant 15
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
San Nicolas Island (3311924), Santa Barbara Island (3311848), Santa Cruz Island C (3311985)
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.

Map

Presumed Extant
Counties   Quads