This name is a synonym of Adiantum braunii Mett. ex Kuhn.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26616811) with original publication details: Mexic. Pl. 1: 127, t. 6 1872.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17009510-1.
This name was in version 1 of The Plant List, record tro-26616811.