| Family | ONAGRACEAE |
| Genus species | Oenothera greggii A.Gray sect. Calylophus |
| Bibliography | Mem. Amer. Acad. Arts, n.s., 4: 46 (1849) |
| Native Range | sw. Kansas to se. Arizona and ne. Mexico |
| Primary Biome | Subtropical |
| Habitat | steppes |
| Altitude | 200-2100m |
| Description | densely pubescent, leaves 1-4cm, very narrowly elliptic or narrowly lanceolate to ovate, on base truncate, entire or sparsely minutely serrate, flowers solitary, petals 12-35mm |
| Size | 10-35cm |
| Color | yellow |
| Bloom | spring, 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, 18-21°C division in spring; cuttings in late summer |
| Synonyms | Calylophus hartwegii var. pubescens (A.Gray) Shinners Calylophus hartwegii ssp. pubescens (A.Gray) Towner & Raven Galpinsia camporum Wooton & Standl. Galpinsia greggii (A.Gray) Small Galpinsia interior Small Galpinsia lampasana (Buckley) Wooton & Standl. Oenothera camporum (Wooton & Standl.) Tidestr. Oenothera greggii var. lampasana (Buckley) Munz Oenothera greggii var. pubescens A.Gray Oenothera greggii var. typica Munz Oenothera hartwegii var. pubescens (A.Gray) Allred Oenothera hartwegii ssp. pubescens (A.Gray) W.L.Wagner & Hoch Oenothera interioir (Small) G.W.Stevens Oenothera lampasana Buckley |
| Territory | 7 Northern America 73 Northwestern U.S.A. (COL Colorado) 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) |