Arnica angustifolia subsp. iljinii (Maguire) I.K. Ferguson

Arnica angustifolia subsp. iljinii (Maguire) I.K. Ferguson is a synonym sensu Downie & Denford, 1988 of:

Arnica angustifolia Vahl subsp. angustifolia, an accepted subspecies name sensu FNA Ed. Comm., 2006c.