| Scientific Name | Astragalus pattersonii | USDA PLANTS Symbol | ASPA14 | 
| Common Name | Patterson Milkvetch | ITIS Taxonomic Serial No. | 25625 | 
| Family | Fabaceae (Pea) | SEINet Reference | Click Here | 
| Description | Life zones and habitat: Semi-desert to foothills (5000 to 8500 ft); dry clay or shaley soils on hillsides, flats. Plant: Erect clump-forming perennial, 9 to 28 inches high; arching red stems. Leaves: Pinnately-compound leaves with up to 13 pairs of deep green elliptic to oblong leaflets 0.2 to 1.2 inches long, with pointed tips and smooth upper surfaces, somewhat hairy beneath. Inflorescence: Clusters of white pea-like flowers in a compact raceme; calyx tubes with conspicuous fringe-like lobes and tiny black hairs; blossoms becoming yellowish with age. Bloom Period: May to July. Fruit: Smooth, green or brownish pods, ellipsoid shape 5/8 to 1 inch long, pointed tips. Reference: "Flora of Colorado" by Jennifer Ackerfield and SW Colorado Wildflowers. | BONAP Distribution Map   Map Color Key | Colorado Status: Native | 
© Tom Lebsack 2025
					Banner photo: Castilleja rhexifolia and a brewing storm over the San Juan Mountains
 I try to provide accurate, up-to-date, and relevant information, but cannot guarantee the completeness or accuracy of any information presented on this website. I use authoritative references to insure high standards of accuracy and review and update the information frequently.