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)
             Basal angiosperms
               Order Ceratophyllales Link (1829)
                 1 Family Ceratophyllaceae Gray (1822), nom. cons. - hornwort family