If you learned Latin at school then you'll be ahead of those that didn't when it comes to recognising plant names.
Here's a cross reference of Popular - Scientific Names.
Angel's Fishing Road
Diarama pulcherrimum
Arrowhead
Arum Lily
Avens
Bog Arum
Bog Bean
Bowles' Golden Grass
Branched Burr Reed
Brandy Bottle
Brass Buttons
Brooklime
Buck Bean
Canadian Pondweed
Cape Pondweed
Cotton Grass
Creeping Jenny
Curled Pondweed
Duck Potato
Duckweed
Dwarf Bulrush
Fairy Moss
Flowering Rush
Fringed Water Lily
Frogbit
Golden Club
Great Reed Mace
Hairgrass
Hornwort
Horsetail
Jesuit's Nut
King Cup
Knotweed
Lizard's Tail
Marsh Marigold
Marsh St John's Wort
Myrtle Flag
Parrot Feather
Pickerel Weed
Ragged Robin
Sacred Lotus
Skunk Cabbage (white)
Skunk Cabbage (yellow)
Starwort
Stonewort
Swamp Lily
Sweet Flag
Sweet Galingale
Taro
Umbrella Grass
Umbrella Grass
Water Buttercup
Water Chestnut
Water Dragon
Water Fern
Water Forget-Me-Not
Water Hawthorn
Water Horsetail
Water Hyacinth
Water Lettuce
Water Plantain
Water Poppy
Water Rhubarb
Water Soldier
Water Strawberry
Water Violet
Weeping Sedge
Willowmoss
Yellow Flag
Zebra Grass
Sagittaria latifolia
Zantedeschia aethiopica
Gerum rivale
Calla palustris
Menyanthese trifoliate
Carex elata 'aurea'
Sparganium erectum
Nuphar lutea
Cotula coronopifolia
Veronica beccabunga
Menyanthese trifoliate
Elodea canadensis
Aponogeton distyachos
Eriophorum angustifolium
Lysimachia nummularia
Potomageton crispus
Sagittaria latifolia
Lemna minor
Typha minima
Azolla caroliniana
Butomus umbellatus
Nymphoides peltata
Hydrocharis morsus-ranae
Orontium aquaticum
Typha latifolia
Eleocharis acicularis
Ceratophyllum demersum
Equisetum scirpoides
Trapa natans
Caltha palustris
Polygonum bistorta
Saururus cernus
Caltha palustris
Hypericum elodes
Acorus calumus variegatus
Myriophyllum aquaticum
Pontederia cordata
Lychnis floscuculi
Nelumbo nucifera
Lysichiton camtschatcensis
Lysichiton americanus
Callitriche verna
Chara vulgaris
Saururus cernus
Acorus calamus variegatus
Cyperus longus
Colocasia eculenta
Cyperus involucratus
Cyperus laterifolia
Ranunculus aquatilis
Trapa natans
Saururus cernus
Azolla caroliniana
Mysotis scorpoides
Aponogeton distyachos
Hippuris vulgaris
Eichhornia crassipes
Pistia stratiotes
Alisma plantago-aquatica
Hydrocleys nymphoides
Gunnera maculata
Stratiotes aloides
Hydrocharis morsus-ranae
Hottonia palustris
Carex pendula
Fontinalis antipyretica
Iris pseudacorus
Scirpus lacustris tabernaemontani