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Jacumba milkvetch

Scientific Name: Astragalus douglasii var. perstrictus

Family: Fabaceae

Category: Dicot

Growth: Forb/herb

Duration: Perennial

Other Names:

       

Jacumba Milkvetch (Astragalus douglasii var. perstrictus)

The Jacumba milkvetch, scientifically known as Astragalus douglasii var. perstrictus, is a rare variety of milkvetch found specifically in San Diego County. It is also known as Astragalus douglasii.

Taxonomy and Nomenclature

  • Scientific Name: Astragalus douglasii (Torrey & A. Gray) A. Gray var. perstrictus (Rydb.) Munz & McBurney
  • Synonym: Astragalus douglasii var. megalophysus (Rydb.) Munz & McBurney
  • Family: Fabaceae (Pea or Legume Family)
  • Other Varieties: Astragalus douglasii var. douglasii, Astragalus douglasii var. parishii
  • Synonym: Phaca douglasii Torr. & A. Gray

Common Names

  • Jacumba milkvetch
  • Douglas' milkvetch

Distribution and Habitat

  • Limited to San Diego County, specifically the desert transition area in southern California.
  • Found in chaparral, foothill woodland, and valley grassland habitats.

Morphological Characteristics and Growth Habits

  • Type: Forb/herb
  • Life Cycle: Perennial

Ecology

  • Associated with the Anza Borrego Desert State Park’s Jacumba Mountain Wilderness.

Further Information

  • USDA-NRCS PLANTS Database
  • BISON Web Link: http://bison.usgs.ornl.gov/api/scientificName/Astragalus%20douglasii%20perstrictus
  • ITIS Web Link
  • Saint Mary's College of California
  • Dave's Garden