Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         ["Plantes" Adans. (1763), nom. vernac. - plants] see Kingdom Plantae Haeckel (1866)
           [Family "Filices" Adans. (1763), nom. inval. - ferns] see Family Filicaceae Juss. (1789), nom. illeg.
             [Section "A Fleurs, appliquées ſous les Feuilles"]
               [Genus "Polypodion" Adans. (1763), nom. null.] see Genus Polypodium L. (1753)