| Family | FABACEAE |
| Genus species | Astragalus hallii A.Gray |
| Bibliography | Proc. Amer. Acad. Arts. 6: 224 (1864) |
| Native Range | wc. USA |
| Primary Biome | Temperate |
| Habitat | grassland and rocks |
| Description | stems thin, sulcate, leaflets 13-19, 5-8mm long, oblong, obtuse or retuse, adaxially glabrous, abaxially grey pilose, flowers numerous in raceme, corolla ca. 1cm long |
| Size | 10-20cm |
| Color | reddish purple |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | scarified seed in spring, germ. 1-3 months, 10-13°C cuttings in late summer |
| Synonyms | Astragalus aboriginorum var. richardsonii (E.Sheld.) B.Boivin Astragalus gracilentus var. hallii (A.Gray) M.E.Jones Astragalus richardsonii E.Sheld. Astragalus shearii Rydb. Atelophragma shearii (Rydb.) Rydb. Homalobus hallii (A.Gray) Rydb. Pisophaca hallii (A.Gray) Rydb. Tragacantha hallii (A.Gray) Kuntze |
| Territory | 7 Northern America 73 Northwestern U.S.A. (COL Colorado) 76 Southwestern U.S.A. (ARI Arizona, UTA Utah) 77 South-Central U.S.A. (NWM New Mexico) |