This name is a synonym of Adiantum comorense (Tardieu) Verdc..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26603280) with original publication details: Fl. Madagasc. 5(1): 129, f. 18/9–14 1958.
This name was in version 1 of The Plant List, record tro-26603280, and has not been changed.