be, arr. leuven, ranunculus repens, bidens frondosa, prunus serotina, urtica dioica, heracleum sphondylium, quercus robur, holcus lanatus, potentilla indica, pilosella aurantiaca, silene coronaria, claytonia perfoliata, galinsoga quadriradiata, quercus rubra, juncus effusus, lathyrus latifolius, arrhenatherum elatius, poa trivialis, alnus glutinosa, tanacetum vulgare, populus canadensis, filipendula ulmaria, phytolacca acinosa, rumex acetosa, amelanchier lamarckii, lepidium didymum, cirsium arvense, oxalis corniculata, lysimachia vulgaris, agrostis capillaris, phalaris arundinacea, galeopsis tetrahit, geranium pyrenaicum, lythrum salicaria, galanthus nivalis, angelica sylvestris, alopecurus pratensis, galium aparine, lycopus europaeus, cardamine pratensis, echinochloa crus-galli, symphoricarpos albus, melilotus albus, lolium perenne, ranunculus acris, juncus tenuis, symphytum officinale, iris pseudacorus, persicaria hydropiper, stellaria graminea, lolium multiflorum