United States, Minnesota, Chisago, Rush Lake Island Natural Area: 7 mi. WSW of Rush City. SE1/4 SW1/4 Sec. 21, T37W, R22W.;Rush Lake Island Scientific Natural Area;037N;22W;21
45.680502 -93.09363 +-800m. WGS84
Edge of elm woods and lake with Urtica gracilis, Ulmis americana, Polygonum lapathifolium.