This name is a synonym of Ditaxis serrata var. californica (Brandegee) Steinm. & Felger.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 15061) with original publication details: Zoe 5: 230 1906.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:311760-2.
This name was in version 1 of The Plant List, record kew-15061.