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 Caryophyllidae Takht. (1967) see Order Caryophyllales Juss. ex Bercht. & J.Presl (1820)
               Order Polygonales Dumort. (1829) see Order Caryophyllales Juss. ex Bercht. & J.Presl (1820)
                 Family Polygonaceae Juss. (1789), nom. cons. - buckwheat family
                   1 Genus Polygonum L. (1753) - knot grass
                   2 Genus Eriogonum Michx. (1803)
                   3 Genus Rumex L. (1753)
                   4 Genus Coccoloba P.Browne (1756), nom. cons., orth. cons.
                   5 Genus Fagopyrum Mill. (1754)