This name is a synonym of Allium nevadense S.Watson.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 274786) with original publication details: Leafl. W. Bot. 4: 177 1945.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:8824-2.
This name was in version 1 of The Plant List, record kew-274786.