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 1702160) with original publication details: Bot. Gaz. 12(5): 103 1887.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:843419-1.
This name was in version 1 of The Plant List, record tro-1702160.