Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "crystal-kingdom"
           chemical substances
             chemical compounds
               Class "lipids"
                 Class glycolipids
                   1 Class glycoglycerolipids
                   1.0 Class glyceroglycolipids
                   2 Class glycophosphatidylinositols
                   3 Class glycosphingolipids