This name is a synonym of Agropyron cristatum (L.) Gaertn..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25501281) with original publication details: Trudy Naucho-Issl. Inst. Bot. 3: 203 1938.
This name was in version 1 of The Plant List, record tro-25501281.