organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Eukaryota Chatton, 1925 - eukaryotes
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Viridaeplantae Cavalier-Sm. (1981) - green plants see [unranked] Viridiplantae Cavalier-Smith, 1981
         Land plants
           Angiosperms - flowering plants see Subclass Magnoliidae Novák ex Takht. (1967)
             Core eudicots see Clade Gunneridae Soltis, Soltis & Judd 2007 [Soltis, Soltis & Judd 2020]
               Order Saxifragales Bercht. & J.Presl (1820)
                 1 Family Cercidiphyllaceae Engl. (1907), nom. cons. - katsura-tree family
                 2 Family Haloragaceae R.Br. (1814), nom. cons.
                 3 Family Hamamelidaceae R.Br. (1818), nom. cons. - witch-hazel family
                 4 Family Iteaceae J.Agardh (1858), nom. cons.
                 5 Family Saxifragaceae Juss. (1789), nom. cons. - saxifrage family