This name is a synonym of Calamagrostis stricta (Timm) Koeler.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 403391) with original publication details: Consp. Fl. Groenland. 3: 161 1880.
This name was in version 1 of The Plant List, record kew-403391.