Wyethia amplexicaulis

Wyethia amplexicaulis is a common herbaceous perennial plant from the northwestern United States called northern wyethia, northern mule ears, or black sunflower. Because of its tendency to grow together in dense colonies and its large, showy flowering heads, it is a well-known western wildflower that is often photographed. The leaves are not very palatable to large herbivores including livestock....read more on Wikipedia.