United States, Wisconsin, Trempealeau, Upper Mississippi River Corridor. Pool 6, River Mile 719.8. UTM E618052 N4877357. Trempeleau National Wildlife Refuge.;Upper Mississippi National Wildlife Refuge;;;
44.0666667 -91.8666667
44° 04' N,91° 52' W;Collector
Growing on silt in water clear (>80 cm deep). Associated with Myriophyllum spicatum, Ceratophyllum demersum, Potamogeton pectinatus, P. crispus, Elodea canadensis, Nelumbo lutea, Nuphar variegata and filamentous algae.