| Family | ASTERACEAE |
| Genus species | Oreostemma haydenii (Porter) Greene trib. Astereae |
| Bibliography | Pittonia 4: 224 (1900) |
| Native Range | nw. USA |
| Primary Biome | Subalpine |
| Habitat | rocky slopes |
| Altitude | 2600-3300m |
| Description | leaves linear-oblanceolate to narrowly oblanceolate, 4-9cm, acute, hirsute or glabrescent, capitula solitary, involucre herbaceous |
| Size | 5-12cm |
| Color | blue |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | rock crevices with favourable water regime, eastern slopes alpine house, poor, drained soil, shading in summer |
| Propagation | seed in spring, barely covered, germ. 1 month, 16-21°C division in spring; cuttings in late spring and late summer |
| Synonyms | Aster alpigenus ssp. haydenii (Porter) Cronquist Aster alpigenus var. haydenii (Porter) Cronquist Aster haydenii Porter Oreastrum haydenii (Porter) Rydb. Oreostemma alpigenum ssp. haydenii (Porter) Semple Oreostemma alpigenum var. haydenii (Porter) G.L.Nesom |
| Territory | 7 Northern America 73 Northwestern U.S.A. (IDA Idaho, ORE Oregon, WYO Wyoming) 76 Southwestern U.S.A. (NEV Nevada) |