United States, Minnesota, Aitkin, Aitkin Co.; Located 5 miles southeast of the town of McGregor; northwest shore of Sheriff Lake; T 47N R 23W NW1/4 of SW1 Aitkin Co.; Located 5 miles southeast of the town of McGregor; northwest shore of Sheriff Lake; T 47N R 23W NW1/4 of SW1/4 of sec 1. 047N 23W 1
46.583358 -93.19834 +-268m.
Plants occur along the shallow, sandy northwest shore; Associated with Najas gracillima, Myriophyllum tenellu, Potamogeton vaseyi, Elatine minima, Isoetes macrospora.