| Family | ROSACEAE |
| Genus species | Petrophytum hendersonii (Canby ex Greene) Rydb. |
| Synonyms | Eriogynia hendersonii Canby ex Greene |
| Luetkea hendersonii (Canby ex Greene) Greene | |
| Spiraea hendersonii (Canby ex Greene) Piper | |
| Habitat | rocks |
| Altitude | 1000-2300m |
| Description | leaves oblanceolate to spathulate-obovate, 10-25mm long, 3-veined, sericeous, raceme 2-5cm long, compact, petals oblong, anthers 35-40 |
| Size | 5-10cm |
| Color | white |
| Bloom | early summer |
| Ca | |
| Type | subshrub, carpet |
| Cultivation | sunny, dry, rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in winter, germ. 1-3 months, 16-18°C cuttings in late summer |
| Territory |
Northern America
Northwestern U.S.A. (Washington) |
| Bibliography | Plants of the World online powo.science.kew.org International Plant Names Index www.ipni.org |
| Comments | ROSACEAE
|