Oenothera ambigua
- Oenothera ambigua (Nutt.) Spreng. in Syst. Veg., ed. 16. 2: 229 (1825) vide Oenothera tetragona Roth in Catal. Bot. 2: 39 (1800)
- Oenothera ambigua S.Watson in Proc. Amer. Acad. Arts 14: 293 (1879), nom. illeg. vide Oenothera deltoides subsp. ambigua (Munz) W.M.Klein in Aliso 5: 179 (1962)