American Umbrella Leaf, a native species, has been added to the USWildflowers database (06/04/2015.) Scientific name is Diphylleia cymosa. Photo below was taken in the Great Smoky Mountains National Park along the Little River Trail near Elkmont on May 04, 2015. Go to the American Umbrella Leaf detail page for more photos and information.
American Umbrella Leaf – Diphylleia cymosa