This name is a synonym of Adiantum breviserratum (Ching) Ching & Y.X. Lin.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26620059) with original publication details: Acta Phytotax. Sin. 6(4): 335 1957.
This name was in version 1 of The Plant List, record tro-26620059, and has not been changed.