Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "crystal-kingdom"
           chemical substances
             chemical compounds
               Class glycoconjugates
                 1 Class glycopeptides [carbohydrate-peptide]
                 2 Class peptidoglycans
                 3 Class proteoglycans
                 5 Class lipopolysaccharides