| Family | FABACEAE |
| Genus species | Astragalus trichocalyx Nutt. |
| Bibliography | Fl. N. Amer. [J.Torrey & A.Gray] 1: 332 (1838) |
| Native Range | ec. USA |
| Primary Biome | Temperate |
| Habitat | steppes |
| Description | stems hirsute, leaves imparipinnate, leaflets 15-25 pairs, elliptic, 8-15mm, hirsute, flowers 5-15 in raceme, corolla 20-25mm long, calyx tubular, densely hirsute |
| Size | 8-20cm |
| Color | blue-violet, rose |
| Bloom | spring, early summer |
| Ca | |
| Type | perennial |
| Cultivation | sunny site with a deep, drained soil alpine house, rich, drained soil, sun |
| Propagation | scarified seed in spring, germ. 1-3 months, 10-13°C cuttings in late summer |
| Synonyms | Astragalus crassicarpus var. trichocalyx (Nutt.) Barneby Astragalus mexicanus var. trichocalyx (Nutt.) Fernald Geoprumnon trichocalyx (Nutt.) Rydb. |
| Territory | 7 Northern America 74 North-Central U.S.A. (ILL Illinois, KAN Kansas, MSO Missouri, OKL Oklahoma) 77 South-Central U.S.A. (TEX Texas) 78 Southeastern U.S.A. (ARK Arkansas, LOU Louisiana) |