This name is a synonym of Adiantum henslovianum Hook. f..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26606790) with original publication details: Linnaea 36: 76 1869.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17011020-1.
This name was in version 1 of The Plant List, record tro-26606790, and has not been changed.