This name is a synonym of Calamagrostis epigejos (L.) Roth.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25518196) with original publication details: Fl. Ross. 4(13): 433 1852.
This name was in version 1 of The Plant List, record tro-25518196.