fr, pas-de-calais, phragmites australis, stuckenia pectinata, agrostis stolonifera, myriophyllum spicatum, lemna minor, lycopus europaeus, ceratophyllum demersum, bolboschoenus maritimus, urtica dioica, lemna trisulca, persicaria amphibia, epilobium hirsutum, sparganium erectum, typha latifolia, potamogeton natans, alisma plantago-aquatica, solanum dulcamara, ranunculus repens, cirsium arvense, spirodela polyrhiza, zannichellia palustris, typha angustifolia, potamogeton crispus, potamogeton pusillus, ranunculus circinatus, lythrum salicaria, iris pseudacorus, elodea nuttallii, ranunculus sceleratus, potamogeton perfoliatus, phalaris arundinacea, lemna gibba, calystegia sepium, eleocharis palustris, glyceria maxima, carex riparia, elodea canadensis, poa trivialis, nuphar lutea, sagittaria sagittifolia, eupatorium cannabinum, schoenoplectus lacustris, persicaria hydropiper, holcus lanatus, galium palustre, juncus effusus, butomus umbellatus, alnus glutinosa, glyceria fluitans, juncus articulatus