Synonyms
Eupatorium amplifolium A.Gray
Eupatorium crenaeum B.L.Rob.
Eupatorium rubricaule Kunth
Ageratina tetragona (Schrad.) R.M.King & H.Rob.
Ageratina crenaea (B.L.Rob.) R.M.King & H.Rob.
Kyrstenia amplifolia Greene
Eupatorium tetragonum Schrad.
Kyrstenia amplissima Greene