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 69FF478E-3326-4B21-8F45-1DFB951D0E3B) with original publication details: 752 1899.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:190658-1.
This name was in version 1 of The Plant List, record gcc-16206.