United States, Minnesota, Norman, Ca. 11 mi. NE of Gary; S of Rte. 107. Along the Sand Hill River (N bank). N1/2 NW1/4 Sec. 11, T146N, R43W (Bear Rock T Ca. 11 mi. NE of Gary; S of Rte. 107. Along the Sand Hill River (N bank). N1/2 NW1/4 Sec. 11, T146N, R43W (Bear Rock Twp.). 146N 43W 11
47.477283 -96.099891 +-969m.
Moist to wet ground along a river. With Acorus calamus, Polygonum lapathifolium, Zizania palustris.