United States, Minnesota, Isanti, About 2 mi NW of Cambridge. SE1/4 SW1/4 Sec19, T36N, R24W.;;036N;24W;19
45.5942958 -93.378893 +-800m.
Growing on a sedge mat around open water in a small, 30 acre basin. Growing with Carex scoparis, Dulichium arundinaceum, and Sagittaria latifolia, with Potentilla palustris, Triadenum fraseri, etc.