This name is a synonym of Festuca violacea subsp. macrathera (Hack. ex Beck) Markgr.-Dann..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 417179) with original publication details: Ann. K. K. Naturhist. Hofmus. 2: 45 1887.
This name was in version 1 of The Plant List, record kew-417179.