| Elodea canadensis | 
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| Scientific classification | 
| Kingdom: | Plantae | 
 
| Clade: | Tracheophytes | 
 
| Clade: | Angiosperms | 
 
| Clade: | Monocots | 
 
| Order: | Alismatales | 
 
| Family: | Hydrocharitaceae | 
 
| Genus: | Elodea | 
| Species: | E. canadensis | 
| Binomial name | 
| Elodea canadensis 
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| Synonyms | 
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 Anacharis alsinastrum  Bab. ex Planch. (1849)
 Anacharis canadensis  (Michx.) Planch. (1849)
 Anacharis linearis  (Rydb.) Vict. (1931)
 Anacharis occidentalis  (Pursh) Vict. (1931)
 Anacharis planchonii  (Casp.) M.Peck (1941)
 Apalanthe schweinitzii  Planch. (1848)
 Elodea brandegeeae  H.St.John (1962)
 Elodea gigantea  J.K.Santos (1923)
 Elodea ioensis  Wylie (1913)
 Elodea iowensis  Wylie rovis.
 Elodea latifolia  Casp. (1857)
 Elodea linearis  (Rydb.) H.St.John (1965)
 Elodea oblongifolia  Michx. ex Casp. (1858)
 Elodea occidentalis  (Pursh) H.St.John (1920)
 Elodea planchonii  Casp. (1857)
 Elodea schweinitzii  (Planch.) Casp. (1857)
 Hydora canadensis  (Michx.) Besser (1832)
 Philotria angustifolia  (Muhl.) Britton ex Rydb. (1906)
 Philotria iowensis  Wylie (1911)
 Philotria linearis  Rydb. (1908)
 Philotria canadensis  (Michx.) Britton (1895)
 Philotria occidentalis  (Pursh) House (1921)
 Philotria planchonii  (Casp.) Rydb. (1908)
 Serpicula canadensis  (Michx.) Eaton (1833)
 Serpicula occidentalis  Pursh (1816)
 Serpicula verticillata  Rostk. & W.L.E.Schmidt (1824)
 Serpicula verticillata var. angustifolia  Muhl. (1813)
 Udora canadensis  (Michx.) Nutt. (1818)
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Elodea canadensis (American waterweed 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.