This name is a synonym of Eleocharis palustris (L.) Roem. & Schult..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 341516) with original publication details: Consp. Fl. Eur. 767 1882.
This name was in version 1 of The Plant List, record kew-341516.