This name is a synonym of Cyanus segetum Hill.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record F034A00D-C4AC-42FD-A636-5A730B29B65C) with original publication details: 12 1887.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:190673-1.
This name was in version 1 of The Plant List, record gcc-48826.