| Oenothera drummondii subsp. thalassaphila (Brandegee) W. Dietr. & W.L. Wagner, 1987 |
| Oenothera elata Kunth, 1823 |
| Oenothera elata subsp. hookeri (Torr. & A. Gray) W. Dietr. & W.L. Wagner, 1987 |
| Oenothera epilobiifolia Kunth, 1823 |
| Oenothera epilobiifolia subsp. cuprea (Schltdl.) P.H. Raven & D.R. Parn., 1970 |
| Oenothera flava (A. Nelson) Garrett, 1927 |
| Oenothera flava subsp. taraxacoides (Wooton & Standl.) W.L. Wagner, 1986 |
| Oenothera grandis Smyth, 1899 |
| Oenothera greggii A. Gray, 1849 |
| Oenothera guadalupensis S. Watson, 1876 |
| Oenothera hartwegii Benth., 1839 |
| Oenothera hartwegii subsp. fendleri (A. Gray) W.L. Wagner & Hoch, 2007 |
| Oenothera hartwegii subsp. pubescens (A. Gray) W.L. Wagner & Hoch, 2007 |
| Oenothera havardii S. Watson, 1885 |
| Oenothera hexandra (Ortega) W.L. Wagner & Hoch, 2007 |
| Oenothera hexandra subsp. gracilis (Wooton & Standl.) W.L.Wagner & Hoch, 2007 |
| Oenothera hexandra subsp. hexandra (Ortega) W.L. Wagner & Hoch, 2007 |
| Oenothera hirta Link, 1821 |
| Oenothera hispida (Benth.) W.L. Wagner, Hoch & Zarucchi, 2015 |
| Oenothera hookeri Torr. & A. Gray, 1840 |