United States, Minnesota, Cook, Boundary Waters Canoe Area Wilderness, Along the shores of Little Trout Lake in rugged bedrock terrain in the Misquah Hills, 16 miles north-northwest of Grand Marais. T63N R1W NW1/4 of SW1/4 Sec. 5
47.9656397 -90.48514829 +-6m. NAD1983
5315542N 687715E; T63N R01W sec5
Infrequent and sporadic, scattered patches in shallow water (mostly less than 5 feet deep) in various places along the shoreline of the lake; specimen was collected along the southern shore. Substrate of silty organics amongst tightly grouped and rather large boulders. Full sun.
Associates include Potamogeton gramineus, P. robbinsii, Equisetum fluviatile.