This name is a synonym of Ruppia cirrhosa (Petagna) Grande.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 308810) with original publication details: Fl. Belg. 164 1827.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:30417880-2.
This name was in version 1 of The Plant List, record kew-308810.