This name is a synonym of Nymphoides rautanenii (N.E.Br.) A.Raynal.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Fl. Trop. Afr. 4(1): 585 1904.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:369855-1.
This name was in version 1 of The Plant List, record kew-2494472, and has not been changed.