This name is a synonym of Ageratina glauca (Sch.Bip. ex Klatt) R.M.King & H.Rob..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym and as an illegitimate name (record 8A5AAC24-6313-49AA-AF80-B93E8E7C0EE2) with original publication details: 98 1881.
This name was in version 1 of The Plant List, record gcc-114183.