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 9CFC4F64-3341-450E-B4CF-FC1A8635FE17) with original publication details: Linnaea 4: 291. 1829 291 1829.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:1164899-2.
This name was in version 1 of The Plant List, record gcc-143526.