glyceria fluitans, persicaria hydropiper, holcus lanatus, myosotis scorpioides, ranunculus repens, stellaria media, argentina anserina, cerastium holosteoides, glyceria maxima, juncus bufonius, persicaria maculosa, poa annua, polygonum aviculare, rorippa amphibia, ranunculus sceleratus, sagittaria sagittifolia