Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
   Class Magnoliopsida Brongn. (1843)
     Subclass Rosidae Takht. (1967) see Superorder Rosanae Takht. (1967)
       Superorder Myrtanae Takht. (1967) see Order Myrtales Juss. ex Bercht. & J.Presl (1820)
         Order Myrtales Juss. ex Bercht. & J.Presl (1820)
           Suborder Onagrineae see Order Myrtales Juss. ex Bercht. & J.Presl (1820)
             Family Onagraceae Juss. (1789), nom. cons. - evening primrose family
               Tribe Onagreae Dumort. (1827)
                 01 Genus Calylophus Spach (1835)
                 02 Genus Camissonia Link (1818)
                 03 Genus Clarkia Pursh (1813)
                 04 Genus Gaura L. (1753) see Genus Oenothera L. (1753)
                 05 Genus Gayophytum A.Juss. (1832)
                 06 Genus Gongylocarpus D.F.L. Schlechtendal & Chamisso (1830)
                 07 Genus Hauya Mociño & Sessé ex DC. (1828)
                 08 Genus Oenothera L. (1753)
                 09 Genus Stenosiphon Spach (1835)
                 10 Genus Xylonagra J.D.Sm. & J.N. Rose (1913)