This name is a synonym of Adiantum obliquum Willd..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50044129) with original publication details: Bull. Herb. Boissier, sér. 2, 4(11): 1094 1904.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:4996-2.
This name was in version 1 of The Plant List, record tro-50044129.