This name is a synonym of Athyrium filix-femina var. asplenioides (Michx.) Farw..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26602698) with original publication details: Kongl. Svenska Vetensk. Acad. Handl. 8(5): 178 1962.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:26132-2.
This name was in version 1 of The Plant List, record tro-26602698.