| Amaranthus | AMASPX |
| Batrachospermum | BATSPX |
| Bidens frondosa | BIDFRO |
| Callitriche obtusangula | CALOBT |
| Callitriche | CALSPX |
| Carex acuta | CARACU |
| Cinclidotus riparius | CINRIP |
| Cladophora | CLASPX |
| Cratoneuron filicinum | CRAFIL |
| Cyperus esculentus | CYPESC |
| Cyperus fuscus | CYPFUS |
| Diatoma | DIASPX |
| Echinochloa crus-galli | ECHCRU |
| Eleocharis multicaulis | ELEMUL |
| Elodea nuttalii | ELONUT |
| Eunotia | EUNSPX |
| Fissidens crassipes | FISCRA |
| Fissidens fontanus | FISFON |
| Fissidens monguillonii | FISMON |
| Fontinalis antipyretica | FONANT |
| Gomphoneis | GOMSPX |
| Groenlandia densa | GRODEN |
| Heribaudiella | HERSPX |
| Hildenbrandia | HILSPX |
| Hygroamblystegium fluviatile | HYAFLU |
| Hydrodictyon | HYISPX |
| Klebsormidium | KLESPX |
| Leersia oryzoides | LEEORY |
| Lemna minor | LEMMIN |
| Lemna minuta | LEMMIT |
| Lemna trisulca | LEMTRI |
| Leptodictyum riparium | LEORIP |
| Lycopus europaeus | LYCEUR |
| Lysimachia vulgaris | LYSVUL |
| Lythrum salicaria | LYTSAL |
| Melosira | MELSPX |
| Mentha aquatica | MENAQU |
| Microcoleus | MIRSPX |
| Myriophyllum spicatum | MYRSPI |
| Oedogonium | OEDSPX |
| Oscillatoria | OSCSPX |
| Oxyrrhynchium hians | OXYHIA |
| Paralemanea | PAASPX |
| Panicum capillare | PANCAP |
| Paspalum distichum | PASDIS |
| Paspalum | PASSPX |
| Persicaria hydropiper | PERHYD |
| Persicaria maculosa | PERMAC |
| Phalaris arundinacea | PHAARU |
| Phormidium | PHOSPX |
| Platyhypnidium riparioides | PLTRIP |
| Potentilla reptans | POEREP |
| Porella pinnata | PORPIN |
| Porella platyphylla | PORPLA |
| Potamogeton crispus | POTCRI |
| Potamogeton nodosus | POTNOD |
| Potamogeton pectinatus | POTPEC |
| Potamogeton perfoliatus | POTPER |
| Potamogeton | POTSPX |
| Potamogeton trichoides | POTTRI |
| Portulaca oleracea | POUOLE |
| Ranunculus fluitans | RANFLU |
| Ranunculus penicillatus var. calcareus | RANPEC |
| Ranunculus penicillatus subsp. penicillatus | RANPEI |
| Ranunculus penicillatus | RANPEU |
| Rhizoclonium | RHISPX |
| Rhynchostegium riparioides | RHYRIP |
| Rorippa amphibia | RORAMP |
| Rorippa palustris | RORPAL |
| Rorippa sylvestris | RORSYL |
| Setaria pumila | SETPUM |
| Sparganium emersum | SPAEME |
| Sparganium | SPASPX |
| Spirogyra | SPISPX |
| Spirodela polyrhiza | SPRPOL |
| Stigeoclonium | STISPX |
| Tolypothrix | TOYSPX |
| Ulothrix | ULOSPX |
| Xanthium orientale subsp. italicum | XANORI |
