United States, Wisconsin, Barron, Little Dummy Lake
T36N R13W sec28
Muck bottom in 0-1.5 meters of water where it often forms dense canopies. Common assoc.: (Eleocharis robbinsii) Robbins spikerush, (Nymphaea odorata) white water lily, (Pontederia cordata) pickerelweed, (Schoenoplectus subterminalis) water bulrush, (Utricularia purpurea) large purple bladderwort, (Brasenia schreberi) watershield.
Relatively common in south and southeast bays. It prefers a firmer bottom than Nymphaea odorata.