| Family | FABACEAE |
| Genus species | Astragalus atratus S.Watson trib. Galegeae |
| Bibliography | Botany [Fortieth Parallel]: 69 (1871) |
| Native Range | w. USA |
| Primary Biome | Temperate |
| Habitat | sandy grassland |
| Description | grey setose, leaves 4-15cm, leaflets 15-17 pairs, patent, filiform or linear, 3-10mm long, raceme 6-15-flowered, flowers 8-9mm long, purple veined, pod pendent, reddish |
| Size | 5-10cm |
| Color | white |
| Bloom | late spring |
| Ca | |
| Type | perennial |
| Cultivation | sunny site with a poor, sandy soil alpine house, sandy soil, sun |
| Propagation | scarified seed in spring, germ. 1-3 months, 10-13°C cuttings in late summer |
| Synonyms | Astragalus atratus var. arctus E.Sheld. Astragalus atratus var. phyllophorus M.E.Jones Astragalus atratus var. stenophyllus M.E.Jones Hamosa atrata (S.Watson) Rydb. Tium atratum (S.Watson) Rydb. Tragacantha atrata (S.Watson) Kuntze |
| Territory | 7 Northern America 73 Northwestern U.S.A. (IDA Idaho, ORE Oregon) 76 Southwestern U.S.A. (CAL California, NEV Nevada) |