This name is a synonym of Adiantum pulverulentum L..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50268857) with original publication details: Linnaea 19: 684 1847.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17011640-1.
This name was in version 1 of The Plant List, record tro-50268857, and has not been changed.