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Idaho milkvetch

Scientific Name: Astragalus conjunctus

Family: Fabaceae

Category: Dicot

Growth: Forb/herb

Duration: Perennial

Other Names:

       

Astragalus conjunctus: Idaho Milkvetch

This page provides information about Astragalus conjunctus, commonly known as Idaho milkvetch.

Considerations for Pets

  • Some milkvetch species are referred to as "loco weed". This may suggest the potential for the plant to affect animal behavior or health, although this document does not confirm that.

Taxonomy and Nomenclature

  • Scientific Name: Astragalus conjunctus S. Watson
  • Common Name: Idaho milkvetch, stiff milkvetch
  • Family: Fabaceae (Pea Family)
  • Synonyms:
    • Astragalus conjunctus S. Watson var. conjunctus
    • Astragalus conjunctus var. rickardii S.L. Welsh, K.A. Beck &amp F. Caplow

Distribution and Habitat

  • Astragalus conjunctus can be found in Idaho and Oregon.
  • Other Astragalus species mentioned as being found in Idaho include:
    • Astragalus leptaleus (park milkvetch)
    • Astragalus vexilliflexus var. vexilliflexus (bent-flowered milkvetch)
    • Astragalus cusickii var. packardiae (Packard's milkvetch)
    • Astragalus agrestis S. Watson (field milk-vetch)
    • Astragalus terminalus, found in southwest Montana, east-central Idaho and northwest Wyoming
    • Astragalus columbianus, Columbia milk-vetch
    • Astragalus diversifolius (Meadow milkvetch)
    • Astragalus ceramicus var. ceramicus

Related Astragalus Species

  • Astragalus cicer (Cicer milkvetch, chickpea milkvetch): Used for hay, pasture, soil stabilization, and conservation plantings.

Additional Information

  • Astragalus conjunctus is on the Idaho Threatened, Endangered and Candidate Plant Species list.
  • Packard's milkvetch (Astragalus cusickii var. packardiae) is considered one of the rarest plants in Idaho. Its known distribution is limited to a small area in Payette County, Idaho.

Further Information

  • Discover Life: Biology, natural history, ecology, identification, and distribution of Astragalus conjunctus.
  • Idaho Conservation Data Center
  • U.S. Fish and Wildlife Service (USDI FWS) in Idaho