This name is a synonym of Festuca prolifera (Piper) Fernald.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 416515) with original publication details: Årskr. Univ. 7: 83 1945.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:104029-2.
This name was in version 1 of The Plant List, record kew-416515, and has not been changed.