| Family | ASTERACEAE |
| Genus species | Erigeron tweedyi Canby trib. Astereae |
| Bibliography | Bot. Gaz. 13: 17 (1888) |
| Native Range | nw. USA |
| Primary Biome | Temperate |
| Habitat | rocky slopes |
| Altitude | 1600-3000m |
| Description | taproot, leaves finely, densely greyish strigose, obovate to suborbiculate, to 25mm long, stem leaves few, reduced, capitula 1-4, ligule 20-50, 5-9mm long |
| Size | 5-20cm |
| Color | blue, purple, 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, 16-21°C cuttings in spring and late summer |
| Territory | 7 Northern America 73 Northwestern U.S.A. (IDA Idaho, MNT Montana, WYO Wyoming) |
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