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 26606789) with original publication details: Hedwigia 48: 238 1909.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:4950-2.
This name was in version 1 of The Plant List, record tro-26606789, and has not been changed.