United States, Illinois, Fulton, Land owned by The Nature Conservancy. The Emiquon Preserve. Illinois River Section of the Upper Mississippi River and Illinois River Bottomlands Natural Division. Havana Quadrangle. Elevation about 430 feet.
T. 4N, R. 4E, NW1/4 SW1/4 NW1/4 Sect. 20
Growing in bottomlands, cultural community: west end of drainage ditch. Shrub about 6 feet tall, flowers indigo