gb, northumberland, sparganium erectum, lemna minor, glyceria maxima, typha latifolia, ranunculus repens, equisetum fluviatile, persicaria amphibia, eleocharis palustris, alisma plantago-aquatica, phalaris arundinacea, epilobium hirsutum, agrostis stolonifera, potamogeton natans, urtica dioica, elodea canadensis, ranunculus sceleratus, galium palustre, lemna trisulca, iris pseudacorus, cirsium arvense, nasturtium officinale, myosotis scorpioides, phragmites australis, helosciadium nodiflorum, rumex crispus, poa trivialis, equisetum palustre, argentina anserina, mentha aquatica, solanum dulcamara, filipendula ulmaria, hippuris vulgaris, butomus umbellatus, glyceria fluitans, spirodela polyrhiza, lycopus europaeus, veronica beccabunga, lythrum salicaria, schoenoplectus lacustris, juncus inflexus, rumex hydrolapathum, nuphar lutea, berula erecta, caltha palustris, juncus effusus, juncus articulatus, sagittaria sagittifolia, ranunculus flammula, alopecurus geniculatus, carex rostrata