Ferns are diverse and abundant in the Lower Liassic flora of the Mecsek Mountains
in south Hungary. The morphogenus Cladophlebis Brongniart, 1849, and the genus Todites
Seward, 1900, show a high diversity. In the examined material, most of the characteristics
used in taxonomy vary, showing transitional forms that cast doubt on the separation
of species established on the grounds of either a low number of specimens, a low number
of features or uncharacteristic differences.
