This name is a synonym of Luzula multiflora subsp. frigida (Buchenau) V.I.Krecz..
The record derives from IOPI
(data supplied on 2012-03-23)
which reports it as a synonym (record 316497) with original publication details: Meddel. Grønland 147(7): 17 1950.
This name was in version 1 of The Plant List, record kew-316497.