This name is a synonym of Ruppia maritima L..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 308807) with original publication details: Mem. New York Bot. Gard. 1: 18 1900.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:224578-2.
This name was in version 1 of The Plant List, record kew-308807.