Eupatorium rugosum var. tomentellum (B.L. Robinson) S.F. Blake

Eupatorium rugosum var. tomentellum (B.L. Robinson) S.F. Blake is a synonym sensu FNA Ed. Comm., 2006c of:

Ageratina altissima (Linnaeus) R.M. King & H. Robinson var. altissima, an accepted variety name sensu FNA Ed. Comm., 2006c.