This name is a synonym of Bromus commutatus subsp. neglectus (Parl.) P.M.Sm..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 401172) with original publication details: Nuov. Fl. Italia 1: 149 1923.
This name was in version 1 of The Plant List, record kew-401172.