This name is a synonym of Carex ascotreta C.B.Clarke ex Franch..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100161182) with original publication details: Nouv. Arch. Mus. Hist. Nat. III, 9: 182 1897.
This name record (from Tropicos) 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 Carex ascocentra in version 1 of The Plant List.