Haplopappus uniflorus subsp. howellii (A. Gray) H.M. Hall

Haplopappus uniflorus subsp. howellii (A. Gray) H.M. Hall is a synonym sensu FNA Ed. Comm., 2006b of:

Pyrrocoma uniflora (Hooker) Greene var. uniflora, an accepted variety name sensu FNA Ed. Comm., 2006b.