persicaria hydropiper, agrostis stolonifera, glyceria maxima, poa trivialis, phalaris arundinacea, elymus repens, urtica dioica, butomus umbellatus, chenopodium album, glyceria fluitans, rorippa amphibia, rorippa palustris, bidens tripartita, equisetum fluviatile, holcus lanatus, myosotis scorpioides, polygonum aviculare, ranunculus sceleratus, stellaria media