| Family | FABACEAE |
| Genus species | Astragalus megacarpus (Nutt.) A.Gray |
| Bibliography | Proc. Amer. Acad. Arts 6: 215 (1864) |
| Native Range | w. USA |
| Primary Biome | Temperate |
| Habitat | sandy grassland |
| Altitude | 1500-2400m |
| Description | glabrous, leaves erect, rigid, 5-17cm long, leaflets 9-15 pairs, ovate to orbiculate, raceme lax, 3-5-flowered, pod ventricose, ellipsoid, 4-7cm long, papery |
| Size | 5-10cm |
| Color | pinkish purple, white |
| Bloom | 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 megacarpus var. neeseae S.L.Welsh Astragalus megacarpus var. parryi A.Gray ex S.Watson Astragalus megacarpus var. prodigus (A.Gray) E.Sheld. Phaca megacarpa Nutt. Tragacantha megacarpa (Nutt.) Kuntze |
| Territory | 7 Northern America 73 Northwestern U.S.A. (COL Colorado, WYO Wyoming) 76 Southwestern U.S.A. (NEV Nevada, UTA Utah) |