This name is a synonym of Najas flexilis (Willd.) Rostk. & W.L.E.Schmidt.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 310084) with original publication details: Bot. Gaz. 10: 255 1885.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:166926-2.
This name was in version 1 of The Plant List, record kew-310084.