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CCDB → Angiosperms → Onagraceae → Oenothera → Oenothera havardii S. Watson
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Oenothera havardii S. Watson | Oenothera havardii S. Watson | 5IV+4II | 14, 28, 28+2-5B | IPCN online | Wagner, W. L. 1984. Reconsideration of Oenothera subg. Gauropsis (Onagraceae). Ann. Missouri Bot. Gard. 71: 1114–1127. |