United States, Wisconsin, Polk, North Pipe Lake
45 -92 47796
45 N, 092 W; T35N R15W sec10
Variable substrate bottoms in 1-4 meters of water. Large-leaf seems to be most common in areas that had some, but not thick muck. Fairly common throughout on the out edge of lily pad beds where the lake drops off into deeper water. Common assoc.: (Potomageton pusillus) small pondweed, (Potamogeton spirillus) spiral-fruited pondweed, (Nitella sp.) nitella.