gb, north & west norfolk, agrostis stolonifera, persicaria amphibia, glyceria maxima, ranunculus repens, phalaris arundinacea, rorippa amphibia, eleocharis palustris, lemna minor, galium palustre, myosotis scorpioides, butomus umbellatus, alisma plantago-aquatica, poa trivialis, phragmites australis, alopecurus geniculatus, bolboschoenus maritimus, spirodela polyrhiza, lemna trisulca, rumex crispus, glyceria fluitans, persicaria hydropiper, argentina anserina, oenanthe aquatica, hydrocharis morsus-ranae, elymus repens, sparganium erectum, trifolium repens, lythrum salicaria, bidens tripartita, ranunculus sceleratus, sium latifolium, plantago major, stachys palustris, cirsium arvense, carex acuta, carex riparia, iris pseudacorus, ceratophyllum demersum, oenanthe fistulosa, equisetum fluviatile, lycopus europaeus, schoenoplectus lacustris, sagittaria sagittifolia, lysimachia nummularia, juncus articulatus, stuckenia pectinata, nymphoides peltata, rumex hydrolapathum, myriophyllum spicatum, lysimachia vulgaris