This name is a synonym of Erythronium californicum Purdy.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 305745) with original publication details: Gard. Chron. 1897(1): 299 1897.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:534911-1.
This name was in version 1 of The Plant List, record kew-305745, and has not been changed.