United States, Minnesota, Cook, in bay just south of the portage between Red Rock Lake and Red Rock Bay. NWSE of sec.;Boundary Waters Canoe Area Wilderness / Superior National Forest;066N;05W;28
48.170813 -90.9782474 +-800m.
with Sparganium angustifolium, Potamogeton alpinus, Elodea canadensis, etc.