Habitat:
With Potamogeton gramineus, P. praelongus, P.amplifolius, P. richardsonii,P, zosteriformis,P. robbinsii, P. Illinoensis, P. nodosus, P. pusillus ssp. tenuissimus, Stuckenia pectinata, Vallisnaria, Elodea canadensis, Myriophyllum tenellum, Nuphar. variegata, Chara sp.
Occurrence Remarks:
Occasional. [Mixed? P. alpinus & P. gramineus - C.D. Tyrell, 2015]