| Family | ASTERACEAE |
| Genus species | Erigeron rydbergii Cronquist trib. Astereae |
| Bibliography | Brittonia 6: 191 (1947) |
| Native Range | nw. USA |
| Primary Biome | Subalpine |
| Habitat | grassland |
| Altitude | 2000-3200m |
| Description | taproot, leaves glabrous, the basal narrowly oblanceolate, to 5cm long, stem leaves linear, capitula solitary, crateriform, disc 7-12mm across, ligules 15-35, 6-9mm long |
| Size | 3-6cm |
| Color | bluish, purplish, white |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | humous, moist, but in winter drier, semi-shady site alpine house, moist, humous soil, shading in summer |
| Propagation | seed in spring, barely covered, germ. 1 month, 16-21°C cuttings in spring and late summer |
| Territory | 7 Northern America 73 Northwestern U.S.A. (IDA Idaho, MNT Montana, WYO Wyoming) |