Lythrum portula
Water-purslane
Mentha pulegium
Pennyroyal
Myriophyllum alterniflorum
Alternate Water-milfoil
Myriophyllum aquaticum
Parrot's-feather
Myriophyllum spicatum
Spiked Water-milfoil
Nasturtium officinale
Water-cress
Nuphar lutea
Yellow Water-lily
Nymphaea alba
White Water-lily
Nymphoides peltata
Fringed Water-lily
Persicaria amphibia
Amphibious Bistort
Persicaria hydropiper
Water-pepper
Persicaria minor
Small Water-pepper
Persicaria mitis
Tasteless Water-pepper
Pilularia globulifera
Pillwort
Potamogeton coloratus
Fen Pondweed
Potamogeton crispus
Curled Pondweed
Potamogeton lucens
Shining Pondweed
Potamogeton natans
Broad-leaved Pondweed
Potamogeton polygonifolius
Bog Pondweed
Ranunculus aquatilis
Common Water-crowfoot
Ranunculus baudotii
Brackish Water-crowfoot
Ranunculus hederaceus
Ivy-leaved Crowfoot
Ranunculus peltatus
Pond Water-crowfoot
Ranunculus sardous
Hairy Buttercup