This name is a synonym of Carex longicaulis Boeckeler.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 225542) with original publication details: Proc. Amer. Acad. Arts 43: 61 1907.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:45973-2.
This name was in version 1 of The Plant List, record kew-225542, and has not been changed.