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 1702110) with original publication details: J. Linn. Soc., Bot. 21: 348 1884.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:843716-1.
This name was in version 1 of The Plant List, record tro-1702110.