This name is a synonym of Carex densa (L.H.Bailey) L.H.Bailey.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 225157) with original publication details: Proc. Amer. Acad. Arts 22: 137 1886.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:292658-2.
This name was in version 1 of The Plant List, record kew-225157, and has not been changed.