Petasites nivalis subsp. vitifolius (Greene) J. Toman

Petasites nivalis subsp. vitifolius (Greene) J. Toman is a synonym sensu FNA Ed. Comm., 2006b of:

Petasites frigidus var. ×vitifolius (Greene) Cherniawsky, an accepted variety name sensu FNA Ed. Comm., 2006b.