This name is a synonym of Cosmos caudatus Kunth.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record EA568F53-FDCE-4710-B7EB-9AAB6D62A4BF) with original publication details: 308 1856.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:184795-1.
This name was in version 1 of The Plant List, record gcc-100459.