fr, pas-de-calais, ludwigia grandiflora, symphytum officinale, bidens frondosa, althaea officinalis, lythrum salicaria, mentha aquatica, iris pseudacorus, pulicaria dysenterica, hydrocotyle ranunculoides, crassula helmsii, stachys palustris, lycopus europaeus, eupatorium cannabinum, galega officinalis, impatiens capensis, lysimachia vulgaris, epilobium hirsutum, fritillaria meleagris, taxodium distichum, calystegia sepium, phragmites australis, heracleum mantegazzianum, cardamine pratensis, salix alba, scrophularia auriculata, ranunculus repens, filipendula ulmaria, myriophyllum aquaticum, urtica dioica, solanum dulcamara, angelica archangelica, cyperus eragrostis, cirsium oleraceum, oenanthe crocata, butomus umbellatus, impatiens glandulifera, galanthus nivalis, phalaris arundinacea, scutellaria galericulata, juncus inflexus, humulus lupulus, azolla filiculoides, thalictrum flavum, arum italicum, heracleum sphondylium, rumex hydrolapathum, caltha palustris, myosotis scorpioides, cirsium arvense, galium palustre