| Family | FABACEAE |
| Genus species | Trifolium arcuatum Piper trib. Trifolieae |
| Bibliography | Bull. Torrey Bot. Club 28: 39 (1901) |
| Native Range | nw. USA |
| Primary Biome | Temperate |
| Habitat | grassland |
| Description | stems erect, subglabrous, leaflets elliptic or oblong, obtuse, 1-3cm, minutely serrate, stipules large, lanceolate, floral heads spherical, 1-3cm, calyx campanulate |
| Size | 20-30cm |
| Color | ochreous yellow |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | mesic, slightly humous, sunny site alpine house, rich, drained soil, sun |
| Propagation | seed in spring, germ. 1-3 months, 13-18°C basal cuttings in late spring and late summer |
| Synonyms | Trifolium eriocephalum ssp. arcuatum (Piper) J.M.Gillett Trifolium eriocephalum f. arcuatum (Piper) McDermott Trifolium eriocephalum var. piperi J.S.Martin |
| Territory | 7 Northern America 73 Northwestern U.S.A. (IDA Idaho, MNT Montana, ORE Oregon, WAS Washington) |