; Sp. Pl.: 346 (1753) s. lat.
Distribution: Temp. and subtropical N- and S-America. Treatment of the Oenothera s. str.-section mostly taken from Dietrich, Wagner & P. H. Raven (1997). The European authors recognize many more apomictic species which have been mostly formed by hybridization after the introduction of few parent species in Europe.
= Anogra Spach; Nouv. Ann. Mus. Par. 4: 339 (1835)
= Antogoeringia Kuntze; Revis. Gen. Pl. 2: 250 (1891)
= Baumannia Spach; Hist. veg. Phan. 4: 351 (1835)
= Blennoderma Spach; Nouv. Ann. Mus. Par. 4: 406 (1835)
= Brunyera Bubani; Fl. Pyrenees. 2: 649 (1900)
= Calylophus Spach; Ann. Sci. Nat. Ser. II. 4: 272 (1835)
= Cratericarpium Spach; Nouv. Ann. Mus. Par. 4: 327, 397 (1835)
= Dictyopetalum Fisch. & C.A.Mey.; Ind. Sem. Hort. Petrop. 2: 45 (1835)
= Galpinsia Britton; Mem. Torrey Bot. Club. 5: 236 (1894)
= Gaura L.; Sp. Pl.: 347 (1753)
= Gaurella Small; Bull. Torrey Bot. Club, 188 (1896)
= Gauridium Spach; Hist. Veg. Phan. 4: 379 (1835)
= Gauropsis (Torr. & Frém.) Cockerell; Bot. Gaz. 30: 351 (1900), nom. illeg.
= Godetia Spach; Hist. Veg. Phan. 4: 386 (1835)
= Hartmannia Spach; Hist. Veg. Phan. 4: 370 (1835)
= Holostigma Spach; Nouv. Ann. Mus. Par. 4: 322 (1835)
= Kneiffia Spach; Hist. Monogr. Phan. [A.DC. & C.DC.] 4: 73 (1835)
= Lavauxia Spach; Hist. Veg. Phan. 4: 366 (1835)
= Megapterium Spach; Hist. Veg. Phan. 4: 363 (1835)
= Meriolix Raf.; Am. Monthly Mag. 192 (1819)
= Oenotheridium Reiche; Fl. Chile 2: 256 (1898)
= Onagra Mill.; Gard. Dict. Abridg. Ed. 4 (1754)
= Onosuris Raf.; Fl. Ludov. 95 (1817)
= Pachylophus Spach; Hist. Veg. Phan. 4: 365 (1835)
= Peniophyllum Pennell; Bull. Torrey Bot. Cl. 46: 373 (1919)
= Pleurandra Raf.; Fl. Ludov.: 95 (1817)
= Pleurostemon Raf.; J. Phys. Chim. Hist. Nat. Arts 89: 258 (1819)
= Pseudo-oenothera Rupr.; Fl. Ingrica: 365 (1860)
= Raimannia Rose; U. S. Dept. Agric. Contr. Nat. Herb. 8: 330 (1905)
= Salpingia Raim.; Nat. Pflanzenfam. [Engler & Prantl] III, 7: 217 (1893)
= Schizocarya Spach; Nouv. Ann. Mus. Par. 4: 325 (1835)
= Sphaerostigma Fisch. & C.A.Mey.; Ind. Sem. Hort. Petrop. 2: 49 (1835)
= Stenosiphon Spach; Nouv. Ann. Mus. Par. 4: 326, 384 (1835)
= Usoricum Lunell; Amer. Midl. Naturalist 4: 481 (1916), nom. superfl.
= Xylopleurum Spach; Hist. Veg. Phan. 4: 378 (1835)