alopecurus geniculatus, glyceria fluitans, elymus repens, persicaria hydropiper, ranunculus repens, agrostis stolonifera, phleum pratense, poa trivialis, spirodela polyrhiza, stellaria media, myosotis scorpioides, phalaris arundinacea, polygonum aviculare, bidens cernuus, capsella bursa-pastoris, rorippa palustris