Natura - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Vegetabile Regnum nom. inval. - plant kingdom see Kingdom Plantae Haeckel (1866)
         Publicae
           Monoclinia
             Diffinitas
               Indifferentismus
                 Class Monandria L. (1735), nom. inval. see Class Monandria L. (1753), nom. inval.
                   Order Monandria Digynia L. (1735), nom. inval. see Order Monandria Digynia L. (1753), nom. inval.
                     Genus Callitriche L. (1748), nom. inval.