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 306062) with original publication details: Syn. Pl. 2: 530 1807.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:602946-1.
This name was in version 1 of The Plant List, record kew-306062.