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 and as an illegitimate name (record 309473) with original publication details: Revista Sudamer. Bot. 6: 134 1940.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:90092-2.
This name was in version 1 of The Plant List, record kew-309473, and has not been changed.