United States, Illinois, Lake, Wadsworth, SE of Wadsworth Rd & Rt 41 jct.
Flower: N Fruit: N Vegetation: Y Bud: N
Des Plaines River Wetland Demonstration Project. Collected from flat of seed bank material grown in a cold-frame at Monrton Arb. The seed bank was collected May 1986 from a riparian marsh & cattail marsh.