This name is a synonym of Sparganium stoloniferum (Buch.-Ham. ex Graebn.) Buch.-Ham. ex Juz..
The record derives from WCSP
(data supplied on 2012-03-26)
which reports it as a synonym (record 266072) with original publication details: Pflanzenr. IV, 10: 13 1900.
This name was in version 1 of The Plant List, record kew-266072.