United States, Wisconsin, Forest, Pine River: North Branch upstream from "Windsor Dam" to canoe landing on FSR 2174, about 4mi SW of village of Alvin
T40N 40N R13E 13E sec20 21
With P. alpinus. Stream 40 to 60 ft. wide, water clear and colorless, bottom sand to soft mud or fine organic materials, often densely vegetated. Sparganium (clorocarpum?) and Potamogeton richardsonii often dominant; Potamogeton alpinus, P. alpinus X richardsonii, P. pectinatus, P. epihydrus, P. obtusifolius, Callitriche verna and Nuphar variegatum locally common.