| Oenothera breedlovei W. Dietr. & W.L. Wagner, 1987 |
| Oenothera caespitosa Gillies ex Hook. & Arn., 1833 |
| Oenothera calcicola (P.H. Raven & D.P. Greg.) W.L. Wagner & Hoch, 2007 |
| Oenothera californica (S. Watson) S. Watson, 1876 |
| Oenothera cardiophylla Torr., 1857 |
| Oenothera coccinea Pursh, 1813 |
| Oenothera coccinea var. epilobioides (Kunth) Munz, 1938 |
| Oenothera curtiflora W.L. Wagner & Hoch, 2007 |
| Oenothera decorticans Hook. Arn. Greene, 1891 |
| Oenothera decorticans var. condensata Munz, 1928 |
| Oenothera deltoides Torr. & Frém., 1845 |
| Oenothera deserticola (Loes.) Munz, 1932 |
| Oenothera dissecta A. Gray ex S. Watson, 1885 |
| Oenothera drummondii Hook., 1834 |
| Oenothera drummondii subsp. drummondii Hook., 1834 |
| 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 |