Crescent milkvetch
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Fabales
- family: Fabaceae
- genus: Astragalus
- species: Astragalus amphioxys
Ciudad Juárez
Chihuahua
Mexico
Beaver Dam- Holbrook
Arizona- Clifton
- Grand Junction
Colorado- Albuquerque
- Sunland Park
New Mexico- El Paso
Texas- Enterprise
- Kanab
- Saint George
Utah
United States