Spotted Joe Pye Weed, a native species, has been added to the USWildflowers database (09/19/2012.) Scientific name is Eutrochium maculatum.  Photo below was taken in the Boundary Waters Canoe Area Wilderness, Lake County, MN on Sep 6, 2012.   Go to the Spotted Joe Pye Weed detail page for more photos and information.

Spotted Joe Pye Weed, Purple Boneset, Spotted Trumpetweed – Eutrochium maculatum