This name is a synonym of Luzula congesta (Thuill.) Lej..
The record derives from IOPI
(data supplied on 2012-03-23)
which reports it as a synonym (record 316493) with original publication details: Syn. Fl. Germ. Helv. 734 1837.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:146231-2.
This name was in version 1 of The Plant List, record kew-316493, and has not been changed.