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 276594) with original publication details: Vilm. Blumengärtn. ed. 3 1: 1115 1895.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:96824-2.
This name was in version 1 of The Plant List, record kew-276594, and has not been changed.