This name is a synonym of Cyanthillium cinereum (L.) H.Rob..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 25A00518-60EA-4978-8113-314F6F7CDC80) with original publication details: "in Wight, Contrib. 6" 6 1834.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:259066-1.
This name was in version 1 of The Plant List, record gcc-26690.