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Chaco milkvetch

Scientific Name: Astragalus micromerius

Family: Fabaceae

Category: Dicot

Growth: Subshrub, Forb/herb

Duration: Perennial

Other Names:

       

Chaco Milkvetch (Astragalus micromerius)

Astragalus micromerius, commonly known as Chaco milkvetch, is a perennial herb belonging to the genus Astragalus.

Considerations for Pets

  • The plant is a milkvetch, and some milkvetch species are known as locoweed, especially in the western US.

Taxonomy and Nomenclature

  • Scientific Name: Astragalus micromerius Barneby
  • Common Name: Chaco milkvetch
  • Family: Fabaceae
  • Taxonomic Status: Accepted
  • Synonyms: None explicitly mentioned, but other Astragalus species are referenced.

Description

  • Type: Subshrub, forb/herb
  • Duration: Perennial
  • Habit: Stems 5-30 cm long, prostrate, silvery-hairy, bearing densely crowded growth.

Distribution and Habitat

  • Found in New Mexico, particularly around Chaco Culture National Historical Park and the South Mesa Trail.
  • Also found on the Todilto limestone northeast of Thoreau.

Related Species

  • Other milkvetch species mentioned include:
    • Astragalus missiensis (Missi milkvetch)
    • Astragalus lyallii (Lyall's Milkvetch)
    • Astragalus microcymbus
    • Astragalus humillimus (Naturita milkvetch, Mancos milkvetch)
    • Astragalus calycosus (matted poison milkvetch)
    • Astragalus mollisimus (woolly milkvetch)
    • Astragalus lentiformis (lens pod milkvetch)
    • Astragalus jaegerianus (Lane Mountain milkvetch)
    • Astragalus allochrous playanus (Wooton's Milkvetch)

Conservation Status

  • Listed as a federal and state species of concern in New Mexico.
  • Packard's milkvetch (not Chaco milkvetch) is mentioned as needing protection from off-road vehicle use.

Further Information

  • USDA PLANTS database
  • Dave's Garden
  • New Mexico Rare Plant Technical Council (NMRPTC)
  • ITIS (Integrated Taxonomic Information System): TSN 25580
  • Species.wikimedia.org