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 4A57ED31-770A-4D42-B8C9-6FA588EE18B2) with original publication details: Revis. Gen. Pl. 1 325 1891.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:45626-2.
This name was in version 1 of The Plant List, record gcc-81368.