| Family | ONAGRACEAE |
| Genus species | Oenothera speciosa Nutt. sect. Hartmannia |
| Bibliography | J. Acad. Nat. Sci. Philadelphia 2: 119 (1821) |
| Native Range | c. & e. USA to n. & c. Mexico |
| Primary Biome | Temperate |
| Habitat | steppes |
| Altitude | 10-900m |
| Description | leaves oblanceolate to obovate, stem leaves oblong, lower leaves pinnatisect, upper leaves subentire, flowers axillary, in bud pendent, petals 25-40mm long |
| Size | 5-50cm |
| Color | pinkish, white |
| 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, 18-21°C division in fall; cuttings in late summer |
| Synonyms | Hartmannia berlandieri (Spach) Rose Hartmannia speciosa (Nutt.) Small Oenothera berlandieri (Spach) D.Dietr. Oenothera delessertiana Steud. Oenothera hirsuta (Spach) D.Dietr. Oenothera obtusifolia D.Dietr. Oenothera shimekii H.Lév. & Guffroy Oenothera spachii D.Dietr. Oenothera speciosa var. berlandieri (Spach) Munz Oenothera speciosa var. childsii (L.H.Bailey) Munz Oenothera speciosa var. serrulatifomis H.Lév. Oenothera speciosa f. subintegrifolia H.Lév. Oenothera speciosa var. typica Munz Oenothera speciosa f. variegata H.Lév. Oenothera tetraptera var. childsii L.H.Bailey Oenothera webbiana Steud. Xylopleurum berlandieri Spach Xylopleurum drummondii Spach Xylopleurum hirsutum Spach Xylopleurum nuttallii Spach Xylopleurum obtusifolium Spach Xylopleurum speciosum (Nutt.) Raim. |
| Territory | 7 Northern America 74 North-Central U.S.A. (IOW Iowa, KAN Kansas, MSO Missouri, NEB Nebraska, OKL Oklahoma) 75 Northeastern U.S.A. (INI Indiana) 77 South-Central U.S.A. (NWM New Mexico, TEX Texas) 78 Southeastern U.S.A. (ARK Arkansas, LOU Louisiana) 79 Mexico (MXC Mexico Central, MXE Mexico Northeast, MXN Mexico Northwest) |