This name is a synonym of Bromus commutatus Schrad..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50054397) with original publication details: Cat. Pl. Vasc. Indre-et-Loire 588 1908.
This name was in version 1 of The Plant List, record tro-50054397.