This name is a synonym of Carex longii subsp. meridionalis (Kük.) Luceño & Alves.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 228600) with original publication details: Revista Sudamer. Bot. 9: 162 1953.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:46627-2.
This name was in version 1 of The Plant List, record kew-228600, and has not been changed.