| Family | ONAGRACEAE |
| Genus species | Oenothera fendleri A.Gray sect. Calylophus |
| Bibliography | Mem. Amer. Acad. Arts, n.s., 4: 45 (1849) |
| Native Range | sw. Kansas to Arizona and ne. Mexico |
| Primary Biome | Subtropical |
| Habitat | steppes |
| Description | glabrous, leaves 1-5cm, linear to oblanceolate or lanceolate, on base attenuate, entire or subentire, flowers solitary, petals 1-3cm long |
| Size | 5-45cm |
| Color | yellow |
| Bloom | spring, summer |
| Ca | |
| Type | subshrub |
| Cultivation | sunny site with a deep, drained soil alpine house, rich, drained soil, sun |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 18-21°C cuttings in late summer |
| Synonyms | Calylophus hartwegii ssp. fendleri (A.Gray) Towner & Raven Galpinsia fendleri (A.Gray) A.Heller Galpinsia hartwegii var. fendleri (A.Gray) Small Oenothera hartwegii var. fendleri (A.Gray) A.Gray Oenothera hartwegii ssp. fendleri (A.Gray) W.L.Wagner & Hoch |
| Territory | 7 Northern America 74 North-Central U.S.A. (KAN Kansas, OKL Oklahoma) 76 Southwestern U.S.A. (ARI Arizona) 77 South-Central U.S.A. (NWM New Mexico, TEX Texas) 79 Mexico (MXE Mexico Northeast) |