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 (record 396898) with original publication details: Fl. Hautes -Pyrénées 74 1867.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:391067-1.
This name was in version 1 of The Plant List, record kew-396898.