Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "crystal-kingdom"
           chemical substances
             chemical compounds
               Class "lipids"
                 Class glycolipids
                   Class glycosphingolipids
                     neutral glycosphingolipids
                       1.1 Class monoglycosylsphingoids
                       1.2 Class oligoglycosylsphingoids
                       1.3 Class polyglycosylsphingoids
                       2.1 Class monoglycosylceramides
                       2.2 Class oligoglycosylceramides
                       2.3 Class polyglycosylceramides
                       3 Class diosylceramides
                       4 Class neutral glycosphingolipids with oligosaccharide chains