Senecio atropurpureus var. ulmeri (Steffen) A.E. Porsild

Senecio atropurpureus var. ulmeri (Steffen) A.E. Porsild is a synonym sensu FNA Ed. Comm., 2006b of:

Tephroseris frigida (Richardson) Holub, an accepted species name sensu FNA Ed. Comm., 2006b.