Potamogeton americanus


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Noun1.Potamogeton americanus - pondweed with floating leaves; of northern United States and Europe
pondweed - any of several submerged or floating freshwater perennial aquatic weeds belonging to the family Potamogetonaceae
genus Potamogeton, Potamogeton - a large genus of aquatic herbs found in quiet waters in temperate regions; leaves usually float on the water