Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [Vegetabilia mycetoidea]
           [Kingdom Gasteromyci] see Class Gasteromycetes Fr. (1821)
             [Circulus Aërogasteres]
               [Metamorphosis]
                 [Semicirculus Trichocisti] see Section Trichocisti Nees
                   [Series Cancellati]
                     1 [Division Stilocancellati]
                     2 [Division Cistocancellati]