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 50293675) with original publication details: Mem. Foug., Gen. Filic. 114 1850.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17012420-1.
This name was in version 1 of The Plant List, record tro-50293675, and has not been changed.