poa trivialis, agrostis stolonifera, alopecurus geniculatus, angelica sylvestris, glyceria maxima, holcus lanatus, iris pseudacorus, persicaria hydropiper, trifolium repens, oenanthe fistulosa, phalaris arundinacea, ranunculus sceleratus, rorippa amphibia, stellaria alsine, carex hirta, ranunculus repens, sparganium erectum