This name is a synonym of Scleria pergracilis (Nees) Kunth.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 464604) with original publication details: Bull. Soc. Bot. France 81: 268 1934.
This name record (from WCSP) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Scleria pergracilis in version 1 of The Plant List.