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)
             Eurosids I see [unranked] fabids
               Order Fagales Engl. (1892)
                 1 Family Betulaceae Gray (1822), nom. cons. - birch family
                 2 Family Casuarinaceae R.Br. (1814), nom. cons. - she-oak family
                 3 Family Fagaceae Dumort. (1829), nom. cons. - beech family
                 4 Family Juglandaceae DC. ex Perleb (1818), nom. cons. - walnut family
                 5 Family Myricaceae Rich. ex Kunth (1817), nom. cons. - bayberry family
                 6 Family Nothofagaceae Kuprian. (1962)