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 8C96431A-BCF6-4912-9013-F53B2944A960) with original publication details: Contr. Gray Herb. 68: 22 22 1923.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:100307-2.
This name was in version 1 of The Plant List, record gcc-140519, and has not been changed.