United States, Illinois, Mason, Lake Chautauqua at the Chautauqua National Wildlife Refuge at the Eagle Nest Access Area along edge of the Illinois River. Illinois River Section of the Upper Mississippi River and Illinois River Bottomlands Natural Division. Coordinate Datum: WGS84/NAD83.
40.37633 -89.97563
T. 22N, R. 8W, NW1/4 Sect. 11
Growing with Salix exigua, Aster simplex, Bidens cernua, B. frondosa, Boltonia, Leersia oryzoides, Echinochloa walteri, Polygonum lapathifolium, etc.