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 E9F4F39D-C24D-4D3C-AC9D-F3EF2ABFCD29) with original publication details: "Fl. Mexic., ed. 2 181" 181 1894.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:100571-2.
This name was in version 1 of The Plant List, record gcc-139978.