gb, west northamptonshire, urtica dioica, epilobium hirsutum, ranunculus repens, cirsium arvense, sparganium erectum, galium aparine, rumex crispus, lemna minor, agrostis stolonifera, typha latifolia, heracleum sphondylium, solanum dulcamara, persicaria maculosa, phalaris arundinacea, poa trivialis, plantago major, alisma plantago-aquatica, persicaria amphibia, calystegia sepium, nasturtium officinale, poa annua, argentina anserina, lycopus europaeus, rumex obtusifolius, lamium album, tripleurospermum inodorum, trifolium repens, anthriscus sylvestris, matricaria discoidea, iris pseudacorus, stachys palustris, gnaphalium uliginosum, oenanthe crocata, lythrum salicaria, helosciadium nodiflorum, juncus inflexus, phragmites australis, nuphar lutea, ranunculus sceleratus, potamogeton natans, impatiens capensis, stellaria media, potentilla reptans, mentha aquatica, butomus umbellatus, elodea canadensis, polygonum aviculare, glyceria maxima, sonchus asper, veronica beccabunga