| Family | ONAGRACEAE |
| Genus species | Oenothera marginata Nutt. ex Hook. & Arn. sect. Pachylophus |
| Bibliography | Bot. Beechey Voy.: 342 (1839) |
| Native Range | w. & sc. USA to n. Mexico |
| Primary Biome | Temperate |
| Habitat | rocky slopes |
| Altitude | 400-3100m |
| Description | densely hirsute, stems simple, leaves 10-20cm, oblanceolate to narrowly elliptic, irregularly pinnatilobate to dentate, flowers solitary, corolla 3-5cm across, capsules erect |
| Size | 10-40cm |
| Color | white |
| Bloom | spring, summer |
| Ca | |
| Type | perennial |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 18-21°C cuttings in late summer |
| Synonyms | Oenothera cespitosa var. eximia (A.Gray) Munz Oenothera cespitosa ssp. eximia (A.Gray) Munz Oenothera cespitosa ssp. marginata (Nutt. ex Hook. & Arn.) Munz Oenothera eximia A.Gray Oenothera idahoensis Mulford Pachylophus cylindrocarpus A.Nelson Pachylophus eximius (A.Gray) Wooton & Standl. Pachylophus marginatus (Nutt. ex Hook. & Arn.) Rydb. Pachylophus prolatus A.Nelson |
| Territory | 7 Northern America 73 Northwestern U.S.A. (COL Colorado, IDA Idaho, ORE Oregon, WAS Washington, WYO Wyoming) 76 Southwestern U.S.A. (ARI Arizona, CAL California, NEV Nevada, UTA Utah) 77 South-Central U.S.A. (NWM New Mexico, TEX Texas) 79 Mexico (MXE Mexico Northeast, MXN Mexico Northwest) |