This name is a synonym of Ageratina neriifolia (B.L.Rob.) R.M.King & H.Rob..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 4B9CA337-682B-4202-8E91-D421CC97659F) with original publication details: Contr. Gray Herb. 65: 49 49 1922.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:100480-2.
This name was in version 1 of The Plant List, record gcc-125911, and has not been changed.