| Family | ROSACEAE |
| Genus species | Petrophytum acuminatum Rydb. |
| Bibliography | N. Amer. Fl. 22: 253 (1908) |
| Native Range | California |
| Primary Biome | Temperate |
| Habitat | rocks |
| Altitude | 1200-2500m |
| Description | pulvinate, leaves oblanceolate, 10-15mm, sparsely finely pilose, univeined, thick, mucronate, shortly petiolate, stem leaves subulate, raceme dense, petals acuminate, 2-3mm |
| Size | 5-10cm |
| Color | white |
| Bloom | summer, autumn |
| Ca | + |
| Type | shrub |
| Cultivation | sunny 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 |
| Synonyms | Petrophytum caespitosum ssp. acuminatum (Rydb.) Munz |
| Territory | 7 Northern America 76 Southwestern U.S.A. (CAL California) |