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 7566DF69-9611-45E9-8351-20CED4438DF1) with original publication details: Contr. Gray Herb. 64 3 1922.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:7078-2.
This name was in version 1 of The Plant List, record gcc-17773.