Arnica

After reviewing many plant sites, I have reached the conclusion that I have misidentified this flower in the past, thinking it was Mule-ears.

Heart-leaf arnica, Heart-leaf leopardbane, Arnica cordifolia, Aster family

(Seed head) Heart-leaf arnica, Heart-leaf leopardbane, Arnica cordifolia, Aster family

It was some time before I understood that this bloom and this seed head go together.