United States, Minnesota, Aitkin, Aitkin Co.; About 6 km east of Malmo on the north side of Highway 2. T45N R24W, NE SW sec. 31;;045N;24W;31
46.338145 -93.42378 +-340m.
Growing in a mesic hardwood forest bordering a large, northeast-southwest trending black ash swamp. Plants located under a sugar maple on a slight north-facing slope along a deer trail; With B. matricariifolium and like B. mat., not under basswood or oak