| Family | FABACEAE |
| Genus species | Trifolium haydenii Porter trib. Trifolieae |
| Bibliography | Prel. Rep. U.S. Geol. Surv. Montana [F.V. Hayden]: 480 (1872) |
| Native Range | nw. USA to Utah |
| Primary Biome | Temperate |
| Habitat | rocky slopes |
| Description | glabrous, stems short, leaflets 3, broadly ovate to suborbiculate, distinctly veined, denticulate, heads above leaves, 5-20-flowered, flowers 13-17mm long |
| Size | 10-15cm |
| Color | pink, whitish yellow |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in spring, germ. 1-3 months, 13-18°C division in spring; basal cuttings in late spring and summer |
| Synonyms | Trifolium idahoense L.F.Hend. |
| Territory | 7 Northern America 73 Northwestern U.S.A. (IDA Idaho, MNT Montana, WYO Wyoming) 76 Southwestern U.S.A. (UTA Utah) |