Species
Elodea canadensis (Canadian waterweed)
Elodea canadensis. Photo: (c) Alex Castelein, some rights reserved (CC BY-NC)
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.
Sightings
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