This name is a synonym of Hydrocotyle verticillata Thunb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 1703724) with original publication details: Ann. Gén. Sci. Phys. 4: 171 1820.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:125194-2.
This name was in version 1 of The Plant List, record tro-1703724.