This name is a synonym of Calamagrostis epigejos (L.) Roth.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 396598) with original publication details: Fl. Taur.-Caucas. 1: 78 1808.
This name was in version 1 of The Plant List, record kew-396598.