This name is a synonym of Ageratina deltoidea (Jacq.) R.M.King & H.Rob..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 6CAD1D81-B0B4-42E2-B1F5-BBB28864E0DA) with original publication details: 76 1884.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:206542-1.
This name was in version 1 of The Plant List, record gcc-115238.