This name is a synonym of Elodea canadensis Michx..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 309471) with original publication details: Rhodora 22: 27 1920.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:90090-2.
This name was in version 1 of The Plant List, record kew-309471, and has not been changed.