poa trivialis, agrostis stolonifera, alopecurus geniculatus, ranunculus sceleratus, cerastium holosteoides, stellaria media, argentina anserina, eleocharis palustris, equisetum fluviatile, glyceria fluitans, glyceria maxima, oenanthe aquatica, phalaris arundinacea, plantago major, plantago uliginosa, polygonum aviculare, ranunculus repens, trifolium repens