Family | ASTERACEAE |
Genus species | Hymenoxys richardsonii (Hook.) Cockerell trib. Helenieae |
Synonyms | Picradenia richardsonii Hook. |
Hymenoxys biennis (A.Gray) H.M.Hall | |
Habitat | dry, rocky slopes |
Altitude | 1000-3400m |
Description | leaves entire to pinnatipartite, segments long, linear, capitula 1-3, involucre 2-seriate, disc 7-17mm across, ligules 8-13, 7-15mm long |
Size | 7-35cm |
Color | yellow |
Bloom | summer |
Ca | |
Type | subshrub |
Cultivation | sunny, dry, 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 |
Northern America
Western Canada (Alberta , Saskatchewan ) Northwestern U.S.A. (Colorado , Montana , Wyoming ) North-Central U.S.A. (North Dakota ) Southwestern U.S.A. (Utah ) South-Central U.S.A. |
Bibliography | Plants of the World online powo.science.kew.org International Plant Names Index www.ipni.org |
Comments | ASTERACEAE
richardsonii floribunda (A.Gray) K.F.Parker, Madrońo 10: 159 (1950)
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