This name is a synonym of Adiantum raddianum C. Presl.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26622596) with original publication details: 1786.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17009630-1.
This name was in version 1 of The Plant List, record tro-26622596.