This name is a synonym of Egeria najas Planch..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 309467) with original publication details: Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1857: 49 1857.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:431721-1.
This name was in version 1 of The Plant List, record kew-309467, and has not been changed.