This name is a synonym of Festuca prolifera (Piper) Fernald.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25536223) with original publication details: Rhodora 10: 65 1908.
This name was in version 1 of The Plant List, record tro-25536223, and has not been changed.