Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         ["vegetable kingdom"]
           ["Cryptogams"]
             [Class Acrogens Lindl.]
               [Alliance Muscales Lindl.]
                 1 [Hepaticæ Juss. (1789)]
                 2 [Natural order Musciᵀ Hedw. (1801)]
                 2.0 [Order Bryaceae] see Order Musci L. (1753), nom. inval.