United States, Minnesota, Polk, Polk Co.; T 150N R 39W NE1/4 of SW1/4 of Sec 22;;150N;39W;22
47.797388 -95.633726 +-969m.
Badly degraded area on road around rice field. Dry sand and gravel soil; associated with Cirisum arvense, Phragmites australis, Ambrosia artemisiifolia.