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 Rhamnanae Takht. ex Reveal (1992) see Order Rosales Bercht. & J.Presl (1820)
         Order Rhamnales Dumort. (1829) see Order Rosales Bercht. & J.Presl (1820)
           Family Rhamnaceae Juss. (1789), nom. cons. - buckthorn family
             Tribe Rhamneae
               01 Genus Sageretia Brongn. (1827)
               02 Genus Scutia (Comm. ex DC.) Brongn. (1827), nom. cons.
               03 Genus Rhamnus L. (1753)
               04 Genus Ceanothus L. (1753)
               05 Genus Hovenia Thunb. (1781)
               06 Genus Noltea Rchb. (1828)
               07 Genus Emmenosperma F.Muell. (1862)
               08 Genus Colubrina Rich. ex Brongn. (1826), nom. cons.
               09 Genus Alphitonia Reissek ex Endl. (1840)
               10 Genus Phylica L. (1753)
               11 Genus Nesiota Hook.f., in Bentham & Hook.f. (1862)
               12 Genus Lasiodiscus Hook.f. (1862)
               13 Genus Pomaderris Labill. (1805)
               14 Genus Trymalium Fenzl, in Endl. et al. (1837)
               15 Genus Spyridium Fenzl, in Endl. et al. (1837)
               16 Genus Cryptandra Sm. (1798)