| Onagraceae | |
Gaura sect. Campogaura | P.H. Raven & D.P. Greg. | Mem. Torrey Bot. Club 23(1): 27 | 1972 [1973] |
| Onagraceae | |
Gaura sect. Pterogaura | P.H. Raven & D.P. Greg. | Mem. Torrey Bot. Club 23(1): 79–80 | 1972 [1973] |
| Onagraceae | |
Oenothera | L. | Sp. Pl. 1: 346 | 1753 |
| Onagraceae | |
Oenothera subsect. Campogaura | (P.H. Raven & D.P. Greg.) W.L. Wagner & Hoch | Syst. Bot. Monogr. 83: 169 | 2007 |
| Onagraceae | |
Oenothera elata | Kunth | Nov. Gen. Sp. (quarto ed.) 6: 90 | 1823 |
| Onagraceae | |
Oenothera elata subsp. elata | | | |
| Onagraceae | |
Oenothera epilobiifolia | Kunth | Nov. Gen. Sp. (quarto ed.) 6: 92 | 1823 |
| Onagraceae | |
Oenothera epilobiifolia subsp. cuprea | (Schltdl.) P.H. Raven & D.R. Parn. | Madroño 20(5): 248 | 1970 |
| Onagraceae | |
Oenothera sect. Gaura | (L.) W.L. Wagner & Hoch | Syst. Bot. Monogr. 83: 165 | 2007 |
| Onagraceae | |
Oenothera subsect. Gaura | (L.) W.L. Wagner & Hoch | Syst. Bot. Monogr. 83: 171 | 2007 |
| Onagraceae | ** |
Oenothera sect. Hartmannia | (Spach) W.L. Wagner & Hoch | Syst. Bot. Monogr. 83: 153 | 2007 |
| Onagraceae | |
Oenothera hexandra | (Ortega) W.L. Wagner & Hoch | Syst. Bot. Monogr. 83: 212 | 2007 |
| Onagraceae | |
Oenothera hexandra subsp. hexandra | | | |
| Onagraceae | |
Oenothera kunthiana | (Spach) Munz | Amer. J. Bot. 19(9): 759 | 1932 |
| Onagraceae | |
Oenothera laciniata | Hill | Veg. Syst. 12(Appendix): 64, pl. 10 | 1767 |
| Onagraceae | |
Oenothera subsect. Nutantigemma | W. Dietr. & W.L. Wagner | Ann. Missouri Bot. Gard. 74(1): 145 | 1987 |
| Onagraceae | |
Oenothera sect. Oenothera | | | |
| Onagraceae | |
Oenothera subsect. Oenothera | | | |
| Onagraceae | ! |
Oenothera pubescens | Willd. ex Spreng. | Syst. Veg. [Sprengel] 2: 229 | 1825 |
| Onagraceae | |
Oenothera subsect. Raimannia | (Rose ex Britton & A. Br.) W. Dietr. | Ann. Missouri Bot. Gard. 64(3): 612 | 1977 [1978] |
| Onagraceae | ! |
Oenothera rosea | L'Hér. ex Aiton | Hort. Kew. 2: 3 | 1789 |
| Onagraceae | |
Oenothera suffrutescens | (Ser.) W.L. Wagner & Hoch | Syst. Bot. Monogr. 83: 214 | 2007 |
| Onagraceae | |
Oenothera tetraptera | Cav. | Icon. 3: 40–41, pl. 279 | 1796 |