This name is a synonym of Allium lacunosum var. davisiae (M.E.Jones) McNeal & Ownbey.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 295411) with original publication details: Contr. W. Bot. 12: 78 1908.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:8738-2.
This name was in version 1 of The Plant List, record kew-295411, and has not been changed.