This name is a synonym of Carex lyngbyei Hornem..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100356990) with original publication details: Naturaliste Canad. 94: 523 1967.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:46561-2.
This name was in version 1 of The Plant List, record tro-100356990.