gb, cambridgeshire cc, lemna minor, phalaris arundinacea, urtica dioica, phragmites australis, persicaria amphibia, glyceria maxima, agrostis stolonifera, elymus repens, cirsium arvense, ranunculus repens, spirodela polyrhiza, galium aparine, poa trivialis, calystegia sepium, lemna trisulca, sparganium erectum, alisma plantago-aquatica, solanum dulcamara, epilobium hirsutum, lythrum salicaria, stuckenia pectinata, butomus umbellatus, lycopus europaeus, argentina anserina, glyceria fluitans, typha latifolia, ceratophyllum demersum, ranunculus sceleratus, stachys palustris, nuphar lutea, rorippa amphibia, sagittaria sagittifolia, iris pseudacorus, rumex crispus, dactylis glomerata, glechoma hederacea, lemna gibba, symphytum officinale, anthriscus sylvestris, hydrocharis morsus-ranae, galium palustre, lysimachia vulgaris, persicaria lapathifolia, carex acuta, carex riparia, elodea canadensis, poa annua, equisetum arvense, filipendula ulmaria, potamogeton crispus