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 A70AC4A2-68AC-4A49-9523-33856DCCA6D9) with original publication details: 242 1810.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:175498-1.
This name was in version 1 of The Plant List, record gcc-27886.