SafePlants

Peck's Milkvetch (Astragalus peckii)

Peck's milkvetch, scientifically known as Astragalus peckii, is a perennial plant of interest due to its threatened status and specific habitat requirements.

Considerations for Pets

• Milkvetch plants, in general, are sometimes referred to as "locoweed," especially in the western US, and some species are known to be poisonous.

Taxonomy and Nomenclature

• Scientific Name: Astragalus peckii Piper
• Common Name: Peck's milkvetch
• Genus: Astragalus L.
• Family: Fabaceae (Pea Family)

Distribution and Habitat

• Primarily found in Oregon, specifically in the Blue Mountains and Deschutes County.
• Occupies habitats characterized by high desert conditions, such as those found on Sutton Mountain.
• Known locations include areas near Tumalo, and along the Tumalo Canal, Silver Creek, and other specific sites listed.

Morphology and Growth Habits

• Described as a prostrate (trailing) perennial.
• Possesses a deep taproot.
• Petioles (leaf stalks) tend to persist even after the leaves have withered.

Conservation Status and Ecological Role

• Designated as a threatened species.
• The species' survival depends on successful propagation efforts.
• Specific areas, such as the Pecks Milkvetch ACEC (Area of Critical Environmental Concern), have been designated for its protection.

Related Species

• Applegate's milkvetch (A. applegatei)
• Mulford's milkvetch (A. mulfordiae)
• Pauper milkvetch (A. misellus)
• Arcane milkvetch (A. obscurus)

Further Information

• Oregon Flora Project: Provides information and images of Astragalus peckii.
• Discover Life: Offers details on the biology, natural history, ecology, identification, and distribution of Peck's milkvetch.
• PLANTS Database: Contains a profile for Astragalus applegatei.