This name is a synonym of Spirodela polyrrhiza (L.) Schleid..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 109301) with original publication details: Not. Pl. Asiat. 3: 216 1851.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:526185-1.
This name was in version 1 of The Plant List, record kew-109301.