be, arr. leuven, bidens frondosa, ranunculus repens, lolium multiflorum, echinochloa crus-galli, epilobium ciliatum, urtica dioica, holcus lanatus, cardamine pratensis, juncus effusus, galinsoga quadriradiata, juncus tenuis, pilosella aurantiaca, persicaria hydropiper, filipendula ulmaria, poa trivialis, cirsium arvense, symphytum officinale, lysimachia vulgaris, heracleum sphondylium, silene coronaria, lythrum salicaria, lathyrus latifolius, lycopus europaeus, rumex acetosa, arrhenatherum elatius, phalaris arundinacea, geranium pyrenaicum, potentilla indica, trifolium hybridum, lepidium didymum, stellaria graminea, rumex obtusifolius, alopecurus pratensis, lolium perenne, veronica persica, crassula helmsii, cerastium fontanum, galium palustre, oxalis stricta, iris pseudacorus, setaria helvola, silene flos-cuculi, matricaria discoidea, melilotus albus, tanacetum vulgare, trifolium repens, oxalis corniculata, cirsium palustre, angelica sylvestris, erigeron canadensis