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 50070800) with original publication details: Deutschl. Fl. 2: 9 1795.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17186750-1.
This name was in version 1 of The Plant List, record tro-50070800.