This name is a synonym of Callitriche hamulata Kütz. ex W.D.J.Koch.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 31672) with original publication details: Fl. Comp. Madrid 292 1861.
This name was in version 1 of The Plant List, record kew-31672.