This name is a synonym of Porophyllum ruderale (Jacq.) Cass..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 35C253A8-A402-43AC-9F3B-23D438AA2E62) with original publication details: Enum. Syst. Pl. 28 1760.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:330060-2.
This name was in version 1 of The Plant List, record gcc-19381.