| Family | RANUNCULACEAE |
| Genus species | Coptis occidentalis (Nutt.) Torr. & A.Gray |
| Bibliography | Fl. N. Amer. 1: 28 (1838) |
| Native Range | nw. USA |
| Primary Biome | Temperate |
| Habitat | thickets and woods |
| Altitude | 500-2000m |
| Description | leaves trifoliolate, leaflets petiolate, broadly ovate, sharply serrate, inflorescence 2-5-flowered, often amongst leaves, in fruit elongate, flowers erect, petals linear |
| Size | 10-25cm |
| Color | green |
| Bloom | spring, summer |
| Ca | |
| Type | perennial |
| Cultivation | cold, shady site with a humous, moist soil alpine house, moist, humous soil, shade |
| Propagation | fresh seed, germ. 3-12 months, 13-16°C division in early spring |
| Synonyms | Chrysocoptis occidentalis Nutt. Coptis occidentalis var. howellii Huth |
| Territory | 7 Northern America 73 Northwestern U.S.A. (IDA Idaho, MNT Montana, WAS Washington) |