be, arr. leuven, bidens frondosa, galinsoga quadriradiata, urtica dioica, potentilla indica, ranunculus repens, silene coronaria, quercus rubra, echinochloa crus-galli, prunus serotina, juncus effusus, heracleum sphondylium, quercus robur, lepidium didymum, lythrum salicaria, pilosella aurantiaca, holcus lanatus, claytonia perfoliata, lathyrus latifolius, poa trivialis, phytolacca acinosa, lysimachia vulgaris, filipendula ulmaria, alnus glutinosa, castanea sativa, oxalis corniculata, cirsium arvense, galium aparine, symphytum officinale, persicaria hydropiper, cardamine pratensis, lycopus europaeus, iris pseudacorus, geranium pyrenaicum, phalaris arundinacea, veronica persica, populus canadensis, calystegia sepium, glechoma hederacea, phragmites australis, sambucus nigra, amelanchier lamarckii, humulus lupulus, galanthus nivalis, oxalis stricta, galeopsis tetrahit, tanacetum vulgare, arrhenatherum elatius, melilotus albus, setaria helvola, angelica sylvestris