This name is a synonym of Alisma gramineum Lej..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 274729) with original publication details: Pflanzenr. IV, 15: 14 1903.
This name was in version 1 of The Plant List, record kew-274729.