This name is a synonym of Adiantum fimbriatum var. shensiense (Ching) Ching & Y.X. Lin.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26620057) with original publication details: Acta Phytotax. Sin. 6(4): 336–337 1957.
This name was in version 1 of The Plant List, record tro-26620057, and has not been changed.