This name is a synonym of Potamogeton pusillus L..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 292426) with original publication details: Anales Soc. Ci. Argent. 65: 295 1908.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:208926-2.
This name was in version 1 of The Plant List, record kew-292426.