silky sophora
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Fabales
- family: Fabaceae
- genus: Sophora
- species: Sophora nuttalliana
Ault- Colorado Springs
- Pagosa Springs
- Trinidad
Colorado- Goodland
Kansas- Alva
Oklahoma- Enterprise
Utah
United States