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 Saxifraganae Reveal (1994)
         Order Podostemales Lindl. (1833) see Order Malpighiales Juss. ex Bercht. & J.Presl (1820)
           Family Podostemaceae Rich. ex Kunth (1816), nom. cons. - river-weed family
             Subfamily Podostemoideae Warm.
               Tribe Podostemeae
                 01 Genus Apinagia L.R. Tulasne (1849)
                 02 Genus Marathrum Bonpl., in Humb. & Bonpl. (1806)
                 03 Genus Rhyncholacis Tulasne (1849)
                 04 Genus Jenmaniella Engl. (1927)
                 05 Genus Lophogyne L.R. Tulasne (1849)
                 06 Genus Hydrobryum Endl. (1841)
                 07 Genus Hydrobryopsis Engl., in Engl. & Prantl (1930)
                 08 Genus Leiothylax Warming (1899)
                 09 Genus Crenias A. Sprengel, in Spreng. (1827)
                 10 Genus Cladopus H. Möller (1899)
                 11 Genus Zeylanidium (Tul.) Engl.
                 12 Genus Podostemum Michx. (1803)
                 13 Genus Castelnavia L.R. Tulasne & Weddell (1849)
                 14 Genus Farmeria Willis ex Trimen (1900)