This name is a synonym of Bromus bromoideus (Lej.) Crép..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25531058) with original publication details: List Brit. Pl. (ed. 2) 133 1928.
This name was in version 1 of The Plant List, record tro-25531058.