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 (record 310641) with original publication details: Ill. Fl. Mitt.-Eur. 1: 152 1907.
This name was in version 1 of The Plant List, record kew-310641.