Haplopappus carthamoides var. erythropappus (Rydberg) H. St.John

Haplopappus carthamoides var. erythropappus (Rydberg) H. St.John is a synonym sensu FNA Ed. Comm., 2006b of:

Pyrrocoma carthamoides Hooker var. carthamoides, an accepted variety name sensu FNA Ed. Comm., 2006b.