United States, Minnesota, Cass, Cass Co.; located north of the Crow Wing River in Crow Wing State Park; T 133N R 29W SE1/4 of SW1/4 of SEc 33;Crow Wing State Park;133N;29W;33
46.287587 -94.346731 +-800m.
Plants occur along a moderately steep river bank with sandy washouts. Associated with Oenothera biennis, Verbascum thapsus.