This name is a synonym of Agrostis gigantea Roth.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 449753) with original publication details: Ess. Agrostogr. 16 1812.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:426438-1.
This name was in version 1 of The Plant List, record kew-449753.