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Cusick's milkvetch

Scientific Name: Astragalus cusickii var. flexilipes

Family: Fabaceae

Category: Dicot

Growth: Forb/herb

Duration: Perennial

Other Names:

       

Cusick's Milkvetch (Astragalus cusickii)

Cusick's milkvetch, scientifically known as Astragalus cusickii A. Gray, is a perennial forb (a non-woody plant that is not a grass) belonging to the genus Astragalus. It is also commonly referred to as locoweed.

Taxonomy and Nomenclature

  • Scientific Name: Astragalus cusickii A. Gray
  • Common Name: Cusick's Milkvetch
  • Family: Fabaceae (also referenced as Fabales)
  • Varieties:
    • Astragalus cusickii A. Gray var. cusickii
    • Astragalus cusickii A. Gray var. flexilipes Barneby
    • Astragalus cusickii var. sterilis (Barneby) Barneby (also referenced as Astragalus cusickii var. sterilis)
  • Synonyms/Alternative Names: Includes other milk-vetch species such as Purple Milkvetch (Astragalus agrestis).

Distribution and Habitat

  • Cusick's milkvetch is endemic to the intermountain west region of the United States.
  • Specific locations mentioned include areas near Oregon Highway 3 near the Oregon-Washington border, Idaho, Hwy 26, 2 mi. SE of Brogan Hill, Vic. Succor Cr., and the Rocking M Ranch, Upper Dennett Creek/ Raft Creek Wildlife Conservation Easement Area, Washington.

Morphological Characteristics and Growth Habits

  • It is described as an erect plant with a relatively bare stem in the lower part and many ramifications developing towards the top.
  • Blooms occur from May to July.
  • It is a perennial herb.