Taxon Report

Astragalus miguelensis Greene

San Miguel Island milk-vetch

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Species Description:
Astragalus miguelensis, commonly known as San Miguel Island milk-vetch, is a perennial herb in the Fabaceae that is found only in California. It occurs within Coastal bluff scrub, Coastal dunes, and Coastal scrub, growing at elevations from 3 to 150 meters. Astragalus miguelensis is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

  Classification

Scientific Name:
Astragalus miguelensis Greene
Common Name:
San Miguel Island milk-vetch
Family: Fabaceae
Element Code: PDFAB0F5C0
USDA Plants Symbol: ASMI6
Synonyms/Other Names:

Ecology and Life History

Lifeform: perennial herb
Blooming Period: Mar-Jul Mar-Jul
Elevation: 3-150 (10-490)
General Habitats: Coastal bluff scrub, Coastal dunes, Coastal scrub
Microhabitat:
Microhabitat Details:

Occurrence Data from the CNDDB

Total Occurrences: 0
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 0
   Fair (C) 0
   Poor (D) 0
   None (X) 0
   Unknown (U) 0
California Endemic:  True
California Counties and Islands: Name (Code)
Los Angeles (LAX), Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
Anacapa Island (3311983), San Clemente Island Central (3211874), San Clemente Island North (3211885), San Clemente Island South (3211873), San Miguel Island East (3312083), San Miguel Island West (3312084), Santa Cruz Island A (3311987), Santa Cruz Island D (3311984), Santa Rosa Island East (3311988), Santa Rosa Island North (3312081), Santa Rosa Island West (3312082)

Notes

Blooms intermittently throughout the year. See Pittonia 1:33 (1887) for original description.
Threats:
Taxonomy:
Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 11 January 2025].