This name is a synonym of Philadelphus zhejiangensis S.M. Hwang.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50077733) with original publication details: Contr. Biol. Lab. Sci. Soc. China 10: 113 1916.
This name was in version 1 of The Plant List, record tro-50077733, and has not been changed.