Systema naturæ - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Regnum Lapideum - mineral kingdom
         Class Petræ - stones
           Order Vitrescentes - glassy stones
             1 Genus Cos
             2 Genus Silex - silica
             3 Genus Qvartzum [U.R. von Kalbe], [1505?] - quartz