United States, Minnesota, Sherburne, Along the SW shore of Lake Ann. SE1/4 SE1/4 Sec. 21, T34N, R27W.;Sand Dunes State Forest;034N;27W;21
45.422323 -93.704452 +-800m. WGS84
On exposed muck along lake shore. With Cyperus engelmanni, Eleocharis smallii, Scirpus acutus, Rorippa islandica, Polygonum lapathifolium, Glyceria borealis, Dulchium arundinacea, etc.