American watermilfoil
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Saxifragales
- family: Haloragaceae
- genus: Myriophyllum
- species: Myriophyllum sibiricum
- Charlemagne
Quebec
Canada- Liminka
Kymenlaakso
Finland- Leksand
Dalarna- Alunda
- Anneberg
- Karlholmsbruk
- Marieberg
- Östhammar
Uppsala- Holmsund
- Obbola
- Skelleftehamn
- Ursviken
Västerbotten- Härnösand
- Johannedal
- Stockvik
- Sundsbruk
- Timrå
Västernorrland
Sweden- Hot Springs
- Hot Springs National Park
Arkansas- Danbury
- East Haven
- Plainville
Connecticut- Whiting
Indiana- Topsfield
Massachusetts- Burns
- Gold Beach
- Port Orford
- Rockaway Beach
Oregon- Camas
- Clear Lake
- Friday Harbor
- Sammamish
- Seattle
Washington- Camp Lake
- Milwaukee
- Silver Lake
Wisconsin
United States