This name is a synonym of Carex × macilenta F.Nyl..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 224354) with original publication details: Spic. Pl. Fenn. 2: 90 1844.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:298474-1.
This name was in version 1 of The Plant List, record kew-224354.