This name is a synonym of Ranunculus delphinifolius f. terrestris (A. Gray) S.F. Blake.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50089807) with original publication details: Manual (ed. 5) 41 1867.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:217451-2.
This name was in version 1 of The Plant List, record tro-50089807.