This name is a synonym of Ranunculus flammula var. ovalis (J.M. Bigelow) L.D. Benson.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 27103167) with original publication details: Fl. Boston. (ed. 2) 224 1824.
This name was in version 1 of The Plant List, record tro-27103167, and has not been changed.