This name is a synonym of Plagiobothrys tenuifolius I.M.Johnst..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Anales Univ. Chile 90: 547 1895.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:96159-2.
This name was in version 1 of The Plant List, record kew-2797950.