This name is a synonym of Deutzia glabrata var. sessilifolia (Pamp.) Zaik..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Nuovo Giorn. Bot. Ital. n.s., 18: 119 1911.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:790900-1.
This name was in version 1 of The Plant List, record kew-2763346, and has not been changed.