gb, herefordshire, county of, iris pseudacorus, epilobium hirsutum, sparganium erectum, lycopus europaeus, lythrum salicaria, solanum dulcamara, typha latifolia, lemna minor, urtica dioica, mentha aquatica, galium palustre, nuphar lutea, alisma plantago-aquatica, filipendula ulmaria, ranunculus repens, equisetum fluviatile, phalaris arundinacea, calystegia sepium, scrophularia auriculata, persicaria amphibia, stachys palustris, caltha palustris, potamogeton natans, phragmites australis, cardamine pratensis, alnus glutinosa, myosotis scorpioides, oenanthe crocata, eleocharis palustris, nymphaea alba, elodea canadensis, juncus effusus, glyceria maxima, helosciadium nodiflorum, eupatorium cannabinum, galium aparine, menyanthes trifoliata, nasturtium officinale, scutellaria galericulata, impatiens capensis, veronica beccabunga, agrostis stolonifera, lemna trisulca, rumex hydrolapathum, salix cinerea, ranunculus flammula, ranunculus lingua, lysimachia vulgaris, glyceria fluitans, argentina anserina