This name is a synonym of Deutzia scabra Thunb..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Bot. Mag. (Tokyo) 44: 96 1930.
This name was in version 1 of The Plant List, record kew-2763367, and has not been changed.