This name is a synonym of Allium roylei Stearn.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 296454) with original publication details: J. Bot. 12: 293 1874.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:528760-1.
This name was in version 1 of The Plant List, record kew-296454, and has not been changed.