This name is a synonym of Adiantum incisum Forssk..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26600894) with original publication details: Niger Fl. 192 1849.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17009260-1.
This name was in version 1 of The Plant List, record tro-26600894.