This name is a synonym of Philadelphus calvescens (Rehder) S.M. Hwang.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50078353) with original publication details: Symb. Sin. 7(2): 438 1931.
This name was in version 1 of The Plant List, record tro-50078353.