This name is a synonym of Ranunculus macropetalus DC..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 27101041) with original publication details: Icon. Sel. Pl. 1: 10 1820.
This name was in version 1 of The Plant List, record tro-27101041, and has not been changed.