United States, Minnesota, Dakota, Black Dog Lake in the Minnesota River bottoms, just north of Burnsville. SE1/4 of NW1/4 of section;Chippewa National Forest;027N;24W;27
44.8002778 -93.2825
44° 48' 01" N,93° 16' 57" W;collector
In relatively firm silty substrate along the shoreline. Associated with Sagittaria latifolia, S. calycina, Cyperus erythrorhizos, Alisma subcordatum, Ammannia coccinea.