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Preuss' milkvetch
Scientific Name: Astragalus preussii
Family: Fabaceae
Category: Dicot
Growth: Forb/herb
Duration: Perennial
Other Names:
Astragalus preussii
Also known as Preuss' milkvetch or Preuss's milk vetch, Astragalus preussii is a forb/herb in the legume family (Fabaceae).
Considerations for Pets
- As a member of the milkvetch family, it shares the common name "locoweed" in some areas of the Western US.
- Certain milkvetches are known to accumulate selenium.
Taxonomy and Nomenclature
- Scientific Name: Astragalus preussii A. Gray
- Family: Fabaceae (Pea Family)
- Synonyms: Preuss's milk vetch
- Subordinate Taxa:
- Astragalus preussii var. preussii
- Astragalus preussii var. latus M.E. Jones – Green River stinking milkvetch
- Astragalus preussii var. laxiflorus
Distribution and Habitat
- Found in the western and southwestern USA, particularly in the Colorado Plateau, northern Arizona, and northwest New Mexico.
- Native to California.
Morphological Characteristics and Growth Habits
- It can be an annual or perennial plant.
- Some forms may develop in an erect manner and, as the years go by, becomes a tree.
- Reported to grow to a size of H:24" W:24".
Ecological Role
- It is associated with desert environments and blooms in May.
Quirky Facts
- One source notes that it can be easily distinguished from similar plants by its "fetid, ill-smelling scent."
Cultivation
- This plant thrives in a bright place, with direct sunlight.
- Young plants may need light protection from wind or cold during winter.
- Zones 9a-10b
Further Information
- Discover Life: Offers information about the biology, natural history, ecology, identification, and distribution of Astragalus preussii.
- CalPhotos: Provides a collection of photos of Astragalus preussii.