Alisma lanceolatum
Narrow-leaved Water-plantain
Alisma plantago-aquatica
Water-plantain
Amorphophallus prainii
Voodoo Lily
Arum italicum
Italian Lords-and-Ladies
Arum maculatum
Lords-and-Ladies
Baldellia ranunculoides
Lesser Water-plantain
Butomus umbellatus
Flowering-rush
Damasonium alisma
Starfruit
Hydrocharis morsus-ranae
Frogbit
Lagarosiphon major
Curly Waterweed
Lemna gibba
Fat Duckweed
Lemna minor
Common Duckweed
Lemna minuta
Least Duckweed
Lemna trisulca
Ivy-leaved Duckweed
Lemna turionifera
Turion Duckweed
Lemna valdiviana
Luronium natans
Floating Water-plantain
Lysichiton americanus
American Skunk-cabbage
Potamogeton coloratus
Fen Pondweed
Potamogeton crispus
Curled Pondweed
Potamogeton lucens
Shining Pondweed
Potamogeton natans
Broad-leaved Pondweed
Potamogeton polygonifolius
Bog Pondweed
Ruppia maritima
Beaked Tasselweed