United States, Minnesota, Mille Lacs, Mille Lacs Kathio State Park. Mille Lacs Co.; lowland hardwood area between two releve plots; About 1 km south of Rum River and 1 km west of Shakopee Mille Lacs Co.; lowland hardwood area between two releve plots; About 1 km south of Rum River and 1 km west of Shakopee Lake in Mille Lacs Kathio State Park. T42N R27W, SW NE sec 21. 042N 27W 21
46.160194 -93.757743 +-969m.
Growing at the edge of a large black ash swamp and lowland hardwood area; With Equisetum sylvaticum and Glyceria striata on mossy hummocks over wet, mucky pools.