United States, Minnesota, Pine, Nemadji River at Maheu Lake. NE1/4 of NE1/4 of section.;;045N;17W;08
46.39726 -92.506406 +-372m.
Plants occur along the edge of the river and grassy, boggy lakeshore. Assoc. with Lycopus uniflorus, Acorus calamus, Sparganium fluctuans, Polygonum amphibium var. stipulaceum.