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 D35AB815-50B2-436D-9BD8-3B0200A58A03) with original publication details: Lex. Gen. Phan. 2 515 1903.
This name was in version 1 of The Plant List, record gcc-31849.