| Family | FABACEAE |
| Genus species | Trifolium oreganum Howell trib. Trifolieae |
| Bibliography | Erythea 1: 110 (1893) |
| Native Range | Oregon to California |
| Primary Biome | Temperate |
| Habitat | grassland and woods |
| Altitude | 1200-1800m |
| Description | stems procumbent, glabrous, stipules linear, leaflets linear-oblong to lanceolate, to 3cm, flowers in lax, subumbellate heads, calyx shortly lanate |
| Size | 5-15cm |
| Color | white, pale rose |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | mesic, slightly humous, semi-shady site alpine house, moist, rich, drained soil, semi-shade |
| Propagation | seed in spring, germ. 1-3 months, 13-18°C division in spring; basal cuttings in late spring and summer |
| Synonyms | Trifolium longipes var. oreganum (Howell) Isely Trifolium longipes ssp. oreganum (Howell) J.M.Gillett Trifolium oreganum f. brachypus McDermott Trifolium rusbyi ssp. oreganum (Howell) D.Heller & Zohary |
| Territory | 7 Northern America 73 Northwestern U.S.A. (ORE Oregon) 76 Southwestern U.S.A. (CAL California) |