Haplopappus spinulosus (Pursh) de Candolle
Haplopappus spinulosus (Pursh) de Candolle is a synonym sensu FNA Ed. Comm., 2006b of:
Xanthisma spinulosum (Pursh) D.R. Morgan & R.L. Hartman var. spinulosum, an accepted variety name sensu FNA Ed. Comm., 2006b.