This name is a synonym of Deutzia uniflora Shirai.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Prelim. Rep. Fl. Pl. Ferns 88 1934.
This name was in version 1 of The Plant List, record kew-2763193, and has not been changed.