| Family | ASTERACEAE |
| Genus species | Chaenactis thompsonii Cronquist trib. Helenieae |
| Bibliography | Vasc. Pl. Pacif. N.W. 5: 123 (1955) |
| Native Range | Washington |
| Primary Biome | Temperate |
| Habitat | rocky slopes |
| Altitude | 900-2200m |
| Description | taproot, leaves thinly tomentose, mainly on stems, flat, pinnatipartite, to 5cm long, capitula few or solitary, involucre turbinate, lanate |
| Size | 10-30cm |
| Color | white |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in spring, barely covered, germ. 1 month, 10-16°C cuttings in late spring and late summer |
| Territory | 7 Northern America 73 Northwestern U.S.A. (WAS Washington) |