persicaria maculosa, persicaria lapathifolia, poa annua, elymus repens, phleum pratense, ranunculus repens, tripleurospermum inodorum, rumex obtusifolius, lolium perenne, persicaria hydropiper, polygonum aviculare, alopecurus pratensis, bidens tripartita, cirsium arvense, echinochloa crus-galli, glyceria fluitans, holcus mollis, rorippa palustris, rumex crispus, equisetum palustre, rumex pratensis, alisma plantago-aquatica, armoracia rusticana, epilobium hirsutum