Petasites trigonophyllus Greene
Petasites trigonophyllus Greene is a synonym sensu FNA Ed. Comm., 2006b of:
Petasites frigidus var. ×vitifolius (Greene) Cherniawsky, an accepted variety name sensu FNA Ed. Comm., 2006b.
Petasites trigonophyllus Greene is a synonym sensu FNA Ed. Comm., 2006b of:
Petasites frigidus var. ×vitifolius (Greene) Cherniawsky, an accepted variety name sensu FNA Ed. Comm., 2006b.