American pondweed noun4 •Any of several North American aquatic plants •Elodea canadensis, in the Hydrocharitaceae family, with many small leaves on a submerged stem •(UK) Potamogeton epihydrus, in the family Potamogetonaceae. •Potamogeton nodosus, in the family Potamogetonaceae, with large floating leaves borne on elongated petioles
