living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Embryobionta Cronquist, Takht. & W.Zimm.
         Division Magnoliophyta Cronquist, Takht. & Zimmerm. (1966) see Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996)
           Class Magnoliopsida Brongn. (1843)
             Subclass Rosidae Takht. (1967) see Superorder Rosanae Takht. (1967)
               Order Podostemales Lindl. (1833) see Order Malpighiales Juss. ex Bercht. & J.Presl (1820)
                 Family Podostemaceae Rich. ex Kunth (1816), nom. cons. - river-weed family
                   1 Genus Apinagia L.R. Tulasne (1849)
                   2 Genus Marathrum Bonpl., in Humb. & Bonpl. (1806)
                   3 Genus Rhyncholacis Tulasne (1849)