American pondweed

== English == === Noun === American pondweed (uncountable) 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 === Further reading === American pondweed on Wikipedia.Wikipedia