This name is a synonym of Carex atrata L..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 226081) with original publication details: Sp. Pl. 4: 220 1805.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:299494-1.
This name was in version 1 of The Plant List, record kew-226081.