This name is a synonym of Diplazium atirrense (Donn. Sm.) Lellinger.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26617256) with original publication details: Bot. Gaz. 23(4): 251 1897.
This name was in version 1 of The Plant List, record tro-26617256.