This name is a synonym of Ageratum conyzoides (L.) L..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 72AC381E-1AE9-47A1-A2E8-89C3D66E0503) with original publication details: 406 1922.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:175502-1.
This name was in version 1 of The Plant List, record gcc-92975.