fr, pas-de-calais, ludwigia grandiflora, crassula helmsii, bidens frondosa, iris pseudacorus, lythrum salicaria, lycopus europaeus, lysimachia vulgaris, phragmites australis, galium palustre, stachys palustris, azolla filiculoides, solanum dulcamara, sparganium erectum, lemna minor, elodea nuttallii, nuphar lutea, glyceria maxima, alisma plantago-aquatica, phalaris arundinacea, hottonia palustris, rumex hydrolapathum, calystegia sepium, hydrocharis morsus-ranae, urtica dioica, sagittaria sagittifolia, mentha aquatica, symphytum officinale, elodea canadensis, scutellaria galericulata, persicaria hydropiper, epilobium hirsutum, rorippa amphibia, typha latifolia, myosotis scorpioides, spirodela polyrhiza, juncus effusus, myriophyllum aquaticum, impatiens glandulifera, persicaria amphibia, hydrocotyle ranunculoides, eupatorium cannabinum, carex riparia, potamogeton natans, ranunculus repens, cardamine pratensis, lemna minuta, filipendula ulmaria, equisetum fluviatile, lemna trisulca, acorus calamus