Euthamia tenuifolia var. pycnocephala (Fernald) C.E.S. Taylor & R.J. Taylor

Euthamia tenuifolia var. pycnocephala (Fernald) C.E.S. Taylor & R.J. Taylor is a synonym sensu TROPICOS of:

Euthamia galetorum Greene, an accepted species name sensu Nesom, 2021b.