Systema naturæ - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Regnum Lapideum - mineral kingdom
         Class Fossilia nom. inval. - Lapides aggregati
           Order Concreta - rocks
             Genus Pumex
               1 Pumex Vegetabilium ater
               1.0 Fuligo see Pumex Vegetabilium ater
               2 Pumex Pyritæ cinereus
               2.0 Pumex see Pumex Pyritae cinereus
               3 Pumex Terræ cinereus
               4 Pumex Cupri ruber
               5 Pumex Argillæ cinereus