United States, Wisconsin, Douglas, Minong Flowage [Washburn Co. - original in error based on Lat./Long.]
T43N R12W sec32
Grows over muck in water from 0.5-1.5m. Common assoc.: (Ceratophyllum demersum) coontail, (Eleodea canadensis) common waterweed, (Myriophyllum spicatum) Eurasian water milfoil, (Potamogeton robbinsii) Robbins (fern) pondweed, (Zizania palustris) northern wild rice.
In the north bays; especially dense along the former river channel at the edge of the littoral zone where it forms monotypic stands.