This name is a synonym of Hordelymus europaeus (L.) Jess. ex Harz.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25515688) with original publication details: Syst. Nat. (ed. 12) 2: 101 1767.
This name was in version 1 of The Plant List, record tro-25515688.