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 39FB8B46-D10F-4F2F-8593-4E9B01180CD4) with original publication details: 356 1861.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:175525-1.
This name was in version 1 of The Plant List, record gcc-42439.