This name is a synonym of Carex atrosquama Mack..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 224540) with original publication details: Amer. J. Sci. V, 3: 88 1922.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:45748-2.
This name was in version 1 of The Plant List, record kew-224540.