This name is a synonym of Allium geyeri S.Watson.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 296278) with original publication details: Bull. Torrey Bot. Club 31: 402 1904.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:8849-2.
This name was in version 1 of The Plant List, record kew-296278.