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