alopecurus geniculatus, agrostis stolonifera, glyceria maxima, ranunculus sceleratus, glyceria fluitans, persicaria hydropiper, juncus bufonius, poa annua, poa trivialis, stellaria alsine, agrostis capillaris, catabrosa aquatica, elymus repens, spirodela polyrhiza, lolium perenne, ranunculus repens, sparganium erectum