| Family | ROSACEAE |
| Genus species | Potentilla tweedyi (Rydb.) J..T.Howell |
| Synonyms | Ivesia tweedyi Rydb. |
| Horkelia tweedyi (Rydb.) A.Nelson & J.F.Macbr. | |
| Habitat | dry, rocky slopes |
| Altitude | 1600-2300m |
| Description | taproot, basal leaves numerous, 3-8cm long, leaflets 19-35, to 1cm, pinnatipartite, segments filiform to linear, flowers in compact cyme, petals 3-4mm long |
| Size | 5-20cm |
| Color | yellow |
| Bloom | summer |
| Ca | |
| Type | tuft |
| Cultivation | sunny, dry, rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 18-21°C cuttings in late summer and fall |
| Territory |
Northern America
Northwestern U.S.A. (Idaho , Montana , Washington) |
| Bibliography | Plants of the World online powo.science.kew.org International Plant Names Index www.ipni.org |
| Comments | ROSACEAE
|