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 and as an illegitimate name (record 6EDE0099-B994-47B0-AB0E-B27D347FA6B6) with original publication details: 32 1905.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:99770-2.
This name was in version 1 of The Plant List, record gcc-111154.