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)
         Publicæ
           Monoclinia
             Diffinitas
               Indifferentismus
                 Class Icosandria L. (1735), nom. inval. see Class Icosandria L. (1753), nom. inval.
                   Order Icosandria Pentagynia L. (1735), nom. inval. see Order Icosandria Pentagynia L. (1753), nom. inval.
                     1 Genus Mespilus nom. inval. see Genus Mespilus L. (1753)
                     2 Genus Pyrus nom. inval. see Genus Pyrus L. (1753)
                     2.0.1 Genus Malus nom. inval. see Genus Pyrus nom. inval.
                     2.0.2 Genus Cydonia nom. inval. see Genus Pyrus nom. inval.
                     3 Genus Spiraea nom. inval. see Genus Spiraea L. (1753)