Flora van Nederland Haeckel (1866) - plants
   Division Spermatophyta Goebel (1882) see Phylum Spermatophyta Goebel (1882)
     Subdivision Angiospermae J. Lindley (1830) see Infraphylum Angiospermae auct.
       Class Dicotyledones see Class Magnoliopsida Brongn. (1843)
         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
               1 Juglans regia L. - walnut