This name is a synonym of Ranunculus orthorhynchus var. bloomeri (S. Watson) L.D. Benson.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 27101569) with original publication details: Bot. California 2: 426 1880.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:712319-1.
This name was in version 1 of The Plant List, record tro-27101569.