This name is a synonym of Philadelphus purpurascens var. szechuanensis (W.P. Fang) S.M. Hwang.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50077590) with original publication details: Acta Sci. Nat. Univ. Szechuan. 1955(1): 36–37, pl. 2 1955.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:957743-1.
This name was in version 1 of The Plant List, record tro-50077590, and has not been changed.