| Family | LOASACEAE |
| Genus species | Mentzelia oligosperma Nutt. ex Sims |
| Bibliography | Bot. Mag. 42: t. 1760 (1815) |
| Native Range | w. & c. USA to Arkansas |
| Primary Biome | Temperate |
| Habitat | steppes |
| Description | stems straw yellow, leaves ovate, sometimes rhombic, dentate and often more or less lobate, to 6cm long, flowers 2-3cm across, petals acute |
| Size | 40-60cm |
| Color | golden yellow |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | sunny site with a deep, drained soil alpine house, rich, drained soil, sun |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 13-18°C cuttings in late spring and in summer |
| Synonyms | Creolobus aureus (Nutt.) Lilja Mentzelia aurea Nutt. Mentzelia diehlii M.E.Jones Mentzelia monosperma Wooton & Standl. Mentzelia nelsonii Greene Mentzelia petiolata Buckley Mentzelia rhombifolia Nutt. |
| Territory | 7 Northern America 73 Northwestern U.S.A. (COL Colorado, WYO Wyoming) 74 North-Central U.S.A. (ILL Illinois, KAN Kansas, MSO Missouri, NEB Nebraska, OKL Oklahoma, SDA South Dakota) 76 Southwestern U.S.A. (ARI Arizona) 77 South-Central U.S.A. (NWM New Mexico, TEX Texas) 78 Southeastern U.S.A. (ARK Arkansas) |