This name is a synonym of Cystopteris fragilis (L.) Bernh..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50070797) with original publication details: Tent. Fl. Germ. 3(1): 98 1800.
This name was in version 1 of The Plant List, record tro-50070797.