This name is a synonym of Ranunculus sieboldii Miq..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50076359) with original publication details: J. Jap. Bot. 18(8): 458 1942.
This name was in version 1 of The Plant List, record tro-50076359, and has not been changed.