| Family | FABACEAE |
| Genus species | Astragalus tetrapterus A.Gray |
| Bibliography | Proc. Amer. Acad. Arts 13: 369 (1878) |
| Native Range | w. USA |
| Primary Biome | Temperate |
| Habitat | stony grassland |
| Description | stems glabrous, sulcate, leaflets 15-21, narrowly linear, 12-20mm, flowers 5-9 in short raceme, calyx lobes aristate-subulate, corolla 15mm, pod 3-4cm, glabrous |
| Size | 10-35cm |
| Color | white |
| Bloom | 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 cinerascens (Rydb.) Tidestr. Astragalus tetrapterus var. capricornus M.E.Jones Astragalus tetrapterus var. cinerascens (Rydb.) Barneby Astragalus tetrapterus var. typicus Rydb. Pterophacos cinerascens Rydb. Pterophacos tetrapterus (A.Gray) Rydb. |
| Territory | 7 Northern America 73 Northwestern U.S.A. (IDA Idaho, ORE Oregon) 76 Southwestern U.S.A. (ARI Arizona, NEV Nevada, UTA Utah) |