This name is a synonym of Allium campanulatum S.Watson.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 296770) with original publication details: Bull. S. Calif. Acad. Sci. 21: 39 1922.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:8896-2.
This name was in version 1 of The Plant List, record kew-296770, and has not been changed.