This name is a synonym of Scilla × allenii (G.Nicholson) Speta.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 302111) with original publication details: Stand. Cycl. Hort. 2: 749 1914.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:532672-1.
This name was in version 1 of The Plant List, record kew-302111.