This name is a synonym of Luzula multiflora subsp. sibirica V.I.Krecz..
The record derives from IOPI
(data supplied on 2012-03-23)
which reports it as a synonym (record 316528) with original publication details: Fl. Zap. Sibiri 3: 556 1929.
This name was in version 1 of The Plant List, record kew-316528.