This name is a synonym of Eleocharis palustris (L.) Roem. & Schult..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50137573) with original publication details: Manual (ed. 5) 558 1867.
This name was in version 1 of The Plant List, record tro-50137573.