What is "elodea canadensis"

Pondweed \Pond"weed`\, n. (Bot.) Any aquatic plant of the genus Potamogeton, of which many species are found in ponds or slow-moving rivers.

Choke pondweed, an American water weed ( Anarcharis Canadensis, syn. Elodea Canadensis.) See Anacharis.

Horned pondweed, the Zannichellia palustris, a slender, branching aquatic plant, having pointed nutlets.

Elodea canadensis (American or Canadian Waterweed or Pondweed) is a perennial aquatic plant, or submergent macrophyte, native to most of North America. It has been introduced widely to regions outside its native range and was first recorded from the British Isles in about 1836.