This name is a synonym of Sparganium stoloniferum subsp. choui (D.Yu) K.Sun.
The record derives from WCSP
(data supplied on 2012-03-26)
which reports it as a synonym (record 266036) with original publication details: Bull. Bot. Res., Harbin 12: 257 1992.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:961301-1.
This name was in version 1 of The Plant List, record kew-266036.