This name is a synonym of Adiantum trapeziforme L..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50268863) with original publication details: Index Fil. 40 1857.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:5104-2.
This name was in version 1 of The Plant List, record tro-50268863.