| Family | FABACEAE |
| Genus species | Astragalus castaneiformis S.Watson trib. Galegeae |
| Bibliography | Proc. Amer. Acad. Arts 20: 361 (1885) |
| Native Range | Arizona |
| Primary Biome | Subtropical |
| Habitat | stony grassland |
| Altitude | 2200-2400m |
| Description | silvery grey, leaves 3-10cm long, leaflets 7-13 pairs, obovate-cuneate, 3-12mm long, raceme 5-10-flowered, pod ovoid, 1-2cm long, appressed sericeous |
| Size | 5-10cm |
| Color | whitish, yellowish |
| 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 | Xylophacos castaneiformis (S.Watson) Rydb |
| Territory | 7 Northern America 76 Southwestern U.S.A. (ARI Arizona) |