fr, pas-de-calais, crassula helmsii, ludwigia grandiflora, phragmites australis, lycopus europaeus, lythrum salicaria, bidens frondosa, elodea nuttallii, iris pseudacorus, azolla filiculoides, rumex hydrolapathum, lysimachia vulgaris, lemna minor, solanum dulcamara, nuphar lutea, acorus calamus, hydrocharis morsus-ranae, sparganium erectum, elodea canadensis, epilobium hirsutum, galium palustre, glyceria maxima, rorippa amphibia, alisma plantago-aquatica, persicaria amphibia, typha latifolia, stachys palustris, sagittaria sagittifolia, typha angustifolia, eupatorium cannabinum, nymphaea alba, lemna trisulca, ceratophyllum demersum, equisetum fluviatile, spirodela polyrhiza, hottonia palustris, potamogeton natans, phalaris arundinacea, scutellaria galericulata, calystegia sepium, myosotis scorpioides, carex pseudocyperus, persicaria hydropiper, ranunculus sceleratus, hydrocotyle vulgaris, symphytum officinale, eleocharis palustris, juncus effusus, butomus umbellatus, carex acuta, stuckenia pectinata