Systema naturæ - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Regnum Vegetabile L. (1735), nom. inval. - plant kingdom see Kingdom Plantae Haeckel (1866)
         Clandestinæ
           Class Cryptogamia L. (1735), nom. inval. see Class Cryptogamia L. (1753)
             Order Filices L. (1735), nom. inval. see Order Filices L. (1753), nom. inval.
               Genus Polypodium Tourn., nom. inval. see Genus Polypodium L. (1753)