This name is a synonym of Carex arctiformis Mack..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 225267) with original publication details: Canad. J. Bot. 43: 1389 1963.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:45917-2.
This name was in version 1 of The Plant List, record kew-225267, and has not been changed.