External link - check-lists
Finland: Alopecurus aequalis - Orange Foxtail 
Finland: Bidens cernua - Nodding Bur-marigold
Finland: Butomus umbellatus - Flowering-rush
Finland: Calla palustris - Bog Arum
Finland: Callitriche cophocarpa
Finland: Callitriche hermaphroditica - Autumnal Water-starwort
Finland: Callitriche palustris - Narrow-fruited Water-starwort
Finland: Caltha palustris - Marsh-marigold
Finland: Carex acuta - Slender Tufted-sedge
Finland: Carex aquatilis - Water Sedge
Finland: Carex elata - Tufted-sedge
Finland: Carex lasiocarpa - Slender Sedge
Finland: Carex pseudocyperus - Cyperus Sedge
Finland: Carex rostrata - Bottle Sedge
Finland: Carex vesicaria - Bladder-sedge
Finland: Ceratophyllum demersum - Rigid Hornwort
Finland: Cicuta virosa - Cowbane
Finland: Crassula aquatica = Tillaea aquatica L. - Pigmyweed
Finland: Elatine hydropiper - Eight-stamened Waterwort
Finland: Elatine triandra - Longstem Waterwort
Finland: Eleocharis palustris - Common Spike-rush
Finland: Elodea canadensis - Canadian Waterweed
Finland: Equisetum fluviatile - Water Horsetail
Finland: Glyceria fluitans - Floating Sweet-grass
Finland: Glyceria maxima - Reed Sweet-grass
Finland: Hippuris vulgaris - Common Mare's-tail
Finland: Hydrocharis morsus-ranae - Common Frogbit
Finland: Iris pseudacorus - Yellow Iris
Finland: Isoëtes echinospora = Isoetes echinospora Durieu - Spring Quillwort
Finland: Isoëtes lacustris = Isoetes lacustris L. - Lake Quillwort
Finland: Juncus bulbosus - Bulbous Rush
Finland: Lemna minor - Common Duckweed
Finland: Lemna trisulca - Ivy-leaved Duckweed
Finland: Littorella uniflora - Shoreweed
Finland: Lobelia dortmanna - Water Lobelia
Finland: Lycopus europaeus - Gypsywort
Finland: Lysimachia thyrsiflora - Tufted Loosestrife
Finland: Lythrum salicaria - Purple-loosestrife
Finland: Menyanthes trifoliata - Common Bogbean
Finland: Myosotis scorpioides - Water Forget-me-not
Finland: Myriophyllum alterniflorum - Alternate Water-milfoil
Finland: Myriophyllum sibiricum - Shortspike Watermilfoil
Finland: Myriophyllum verticillatum - Whorled Water-milfoil
Finland: Nuphar lutea - Yellow Water-lily
Finland: Nuphar pumila - Least Water-lily
Finland: Nymphaea alba - White Water-lily
Finland: Nymphaea candida - Lesser Waterlily
Finland: Nymphaea tetragona - Pygmy Waterlily
Finland: Phalaris arundinacea - Reed Canary-grass
Finland: Phragmites australis - Common Reed
Finland: Polygonum amphibium = Persicaria amphibia (L.) Delarbre - Amphibious Bistort
Finland: Potamogeton alpinus - Red Pondweed
Finland: Potamogeton berchtoldii - Small Pondweed
Finland: Potamogeton compressus - Grass-wrack Pondweed
Finland: Potamogeton filiformis = Stuckenia filiformis (Pers.) Börner - Fineleaf Pondweed
Finland: Potamogeton gramineus - Various-leaved Pondweed
Finland: Potamogeton natans - Broad-leaved Pondweed
Finland: Potamogeton obtusifolius - Blunt-leaved Pondweed
Finland: Potamogeton perfoliatus - Perfoliate Pondweed
Finland: Potamogeton praelongus - Long-stalked Pondweed
Finland: Potentilla palustris = Comarum palustre L. - Marsh Cinquefoil
Finland: Ranunculus confervoides
Finland: Ranunculus flammula - Lesser Spearwort
Finland: Rumex aquaticus - Scottish Dock
Finland: Rumex hydrolapathum - Water Dock
Finland: Sagittaria natans
Finland: Schoenoplectus lacustris - Common Club-rush
Finland: Scirpus silvaticus = Scirpus sylvaticus L. - Wood Club-rush
Finland: Scolochloa festucacea - Common Rivergrass
Finland: Sparganium angustifolium - Floating Bur-reed
Finland: Sparganium emersum - Unbranched Bur-reed
Finland: Sparganium erectum - Branched Bur-reed
Finland: Sparganium gramineum
Finland: Sparganium minimum = Sparganium natans L. - Least Bur-reed
Finland: Spirodela polyrrhiza = Spirodela polyrhiza (L.) Schleid. - Greater Duckweed
Finland: Stratiotes aloides - Water-soldier
Finland: Subularia aquatica - Awlwort
Finland: Typha angustifolia - Lesser Bulrush
Finland: Typha latifolia - Bulrush
Finland: Utricularia intermedia - Intermediate Bladderwort
Finland: Utricularia minor - Lesser Bladderwort
Finland: Utricularia vulgaris - Greater Bladderwort