United States, Minnesota, Cass, Along the Paul Bunyan State Trail (old Burlington Northern Railroad), six miles north of Hackensack, six miles south of Walker. On the northeast shore of Portage Lake. E1/2 of NE1/4 of SW1/4 of section;;141N;31W;24
47.0162764 -94.5462387
47.0162764° N,94.5462387° W;collector
In strongly rolling forested moraine. Rare and local. In moist sand and moist thin muck over sand along wave-washed beach, ~12-18 inches above present lake level (which is down due to extended drought). Full sun. Associated species include Cyperus bipartitus, Eleocharis acicularis, E. palustris, Ranunculus flammula, Juncus pelocarpus, Bidens cernua.