Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "Lapideum Regnum" nom. inval. - mineral kingdom
           Class "Fossilia" nom. inval. - Lapides aggregati
             Order "Terrae"
               Genus "Glarea"
                 1 "Glarea tenuissima, flatu aeris volitans"
                 2 "Glarea farinacea apyra"
                 3 "Glarea argillacea apyra mixta"