be, arr. leuven, oxalis corniculata, silene coronaria, pilosella aurantiaca, galinsoga quadriradiata, lathyrus latifolius, claytonia perfoliata, echinochloa crus-galli, erigeron canadensis, lepidium didymum, erigeron sumatrensis, geranium pyrenaicum, veronica persica, vicia villosa, lolium multiflorum, viola wittrockiana, setaria helvola, prunus serotina, potentilla indica, melilotus albus, matricaria discoidea, holcus lanatus, phytolacca acinosa, lepidium virginicum, oxalis stricta, lolium perenne, cerastium fontanum, ranunculus repens, arrhenatherum elatius, agrostis capillaris, plantago lanceolata, achillea millefolium, juncus tenuis, potentilla recta, quercus rubra, tanacetum vulgare, vicia hirsuta, veronica arvensis, trifolium dubium, trifolium incarnatum, papaver somniferum, digitaria sanguinalis, rumex acetosa, castanea sativa, oenothera glazioviana, hypericum perforatum, galinsoga parviflora, centaurea cyanus, quercus robur, heracleum sphondylium, senecio inaequidens