This name is a synonym of Ageratina gloeoclada (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 9C24B1BD-0045-49C1-A897-F2C993FF89DF) with original publication details: Proc. Amer. Acad. Arts 55 17 1919.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:100021-2.
This name was in version 1 of The Plant List, record gcc-139463.