Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         ["Regnum Vegetabile" L. (1753), nom. inval. - plant kingdom] see Kingdom Plantae Haeckel (1866)
           [Class "Tetrandria" L. (1753), nom. inval.]
             [Order "Tetrandria Monogynia" L. (1753), nom. inval.]
               01 Genus Leucadendron L. (1753), nom. rej.
               18 Genus Siphonanthus L. (1753)
               38 Genus Tomex L. (1753)
               40 [Genus "Ludvigia" L. (1753)] see Genus Ludwigia L. (1753)