⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record gcc-67899, with some changes.
This name is a synonym of Ageratina altissima var. altissima (L.) R.M.King & H.Rob..
The record derives from TICA which reports it as a synonym (record 0246AC73-EDA1-4BE8-A545-DADC4CC3C313) with original publication details: Brittonia 23 138 1971.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:876391-1.