| Family | ASTERACEAE |
| Genus species | Hymenoxys richardsonii (Hook.) Cockerell trib. Helenieae |
| Bibliography | Bull. Torrey Bot. Club 31: 468 (1904) |
| Native Range | wc. Canada to w. & c. USA |
| Primary Biome | Temperate |
| Habitat | rocky slopes |
| Altitude | 1000-3400m |
| Description | leaves entire to pinnatipartite, segments long, linear, capitula 1-3, involucre 2-seriate, disc 7-17mm across, ligules 8-13, 7-15mm long |
| Size | 7-35cm |
| Color | yellow |
| Bloom | summer |
| Ca | |
| Type | subshrub |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in spring, barely covered, germ. 1 month, 10-16°C cuttings in late spring and late summer |
| Synonyms | Actinea biennis (A.Gray) Kuntze Actinea richardsonii (Hook.) Kuntze Actinella biennis A.Gray Actinella richardsonii (Hook.) Nutt. Hymenopappus liguliflorus (A.Nelson) A.Nelson Hymenoxys biennis (A.Gray) H.M.Hall Hymenoxys canescens var. biennis Cockerell Hymenoxys canescens var. nevadensis Cockerell Hymenoxys liguliflora (A.Nelson) Cocekerell Hymenoxys richardsonii var. liguliflora (A.Nelson) Cockerell Hymenoxys richardsonii var. macrantha Cockerell Hymenoxys richardsonii var. nelsonii Cockerell Hymenoxys richardsonii var. pumila Cockerell Hymenoxys tichardsonii var. utahensis Cockerell Picradenia biennis (A.Gray) Greene Picradenia richardsonii Hook. Ptilepida floribunda A.Heller |
| Territory | 7 Northern America 71 Western Canada (ABT Alberta, SAS Saskatchewan) 73 Northwestern U.S.A. (COL Colorado, MNT Montana, WYO Wyoming) 74 North-Central U.S.A. (NDA North Dakota) 76 Southwestern U.S.A. (ARI Arizona, UTA Utah) 77 South-Central U.S.A. (NWM New Mexico, TEX Texas) |