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 FE8F06FD-5EFB-4454-BFF9-8CCBDE829C1B) with original publication details: 319 1840.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:190246-1.
This name was in version 1 of The Plant List, record gcc-94356.