| Family | APIACEAE |
| Genus species | Lomatium laevigatum J.M.Coult. & Rose |
| Bibliography | Contr. U.S. Natl. Herb. 7: 225 (1900) |
| Native Range | Oregon to s. Washington |
| Primary Biome | Temperate |
| Habitat | rocks |
| Altitude | 100-500m |
| Description | leaves mainly basal, long petiolate, pinnatipartite, ultimate segments linear, flowers in dense, compound umbel, numerous, wings of achenes very broad |
| Size | 20-30cm |
| Color | yellow |
| Bloom | spring |
| Ca | + |
| Type | perennial |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed when ripe or as soon as possible |
| Territory | 7 Northern America 73 Northwestern U.S.A. (ORE Oregon, WAS Washington) |