| Family | LOASACEAE |
| Genus species | Mentzelia torreyi A.Gray |
| Bibliography | Proc. Amer. Acad. Arts 10: 72 (1874) |
| Native Range | California to Nevada |
| Primary Biome | Desert or Dry Shrubland |
| Habitat | dry, sandy grassland |
| Altitude | 1200-2000m |
| Description | stems white, scabrous-hirsute, leaves sessile, in outline lanceolate to ovate, 3-5-lobate, middle segment spinose, flowers solitary, axillary, petals 5, 8-10mm long |
| Size | 5-15cm |
| Color | yellow |
| Bloom | summer |
| Ca | |
| Type | subshrub |
| Cultivation | dry, sunny site with a poor, sandy soil alpine house, dry, sandy soil, sun |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 13-18°C cuttings in late spring and in summer |
| Territory | 7 Northern America 76 Southwestern U.S.A. (CAL California, NEV Nevada) |