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 Hamamelidae see Subclass Hamamelididae Takht. (1967)
               Order Juglandales Dumort. (1829) see Order Fagales Engl. (1892)
                 Family Juglandaceae DC. ex Perleb (1818), nom. cons. - walnut family
                   Genus Juglans L. (1753) - walnut trees