This name is a synonym of Ranunculus bulbosus subsp. castellanus (Boiss. & Reut. ex Freyn) P.W.Ball & Heywood.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Prodr. Fl. Hispan. 3: 932 1880.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:712433-1.
This name was in version 1 of The Plant List, record kew-2523617, and has not been changed.