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Maine Center for Invasive Aquatic Plants
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Dichotomous key to some Maine native aquatic plants
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Look Alike Plants
Listing of Invasive Aquatic Plants
and their native look alikes
Brazilian elodea
Hydrilla
Common water starwort
Common waterweed
Large water starwort
Mare's tail
Slender waterweed
Curly-leaf Pondweed
Large-leaf pondweed
Clasping-leaf pondweed
Other species in the
Potamogeton
genus
Eurasian water-milfoil
Water marigold
Coontail
Common bladderwort
Fanwort
Mermaid-weed
Prickly hornwort
White water crowfoot
Yellow water crowfoot
European frogbit
Small yellow pond lily
Fragrant water lily
Water-shield
Spatterdock
Little floating heart
European naiad
Slender naiad
Southern naiad
Thread-like naiad
Fanwort
Water-milfoil species
Common bladderwort
Water marigold
White water crowfoot
Yellow water crowfoot
Coontail
Prickly hornwort
Mermaid-weed
Hydrilla
Brazilian elodea
Common water starwort
Common waterweed
Large water starwort
Mare's tail
Slender waterweed
Parrot feather
Other water-milfoil species
Mermaid-weed
Variable water-milfoil
Water marigold
Coontail
Common bladderwort
Fanwort
Mermaid-weed
Prickly hornwort
White water crowfoot
Yellow water crowfoot
Water Chestnut
Water chestnut is not easily confused with other aquatic plants.
Yellow floating heart
European frogbit
Small yellow pond lily
Fragrant water lily
Little floating heart
Watershield
Spatterdock
Scientific Name
Common Name
Native Plants
Invasive Plants
Look Alikes
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Maine Center for Invasive Aquatic Plants
24 Maple Hill Road, Auburn, ME 04210
(207)-783-7733
www.mciap.org/herbarium
© 2004 Maine Center for Invasive Aquatic Plants
vlmp@mainevlmp.org