be, arr. leuven, silene coronaria, erigeron canadensis, pilosella aurantiaca, claytonia perfoliata, agrostis capillaris, prunus serotina, echinochloa crus-galli, oxalis corniculata, juncus tenuis, lathyrus latifolius, lepidium didymum, holcus lanatus, matricaria discoidea, galinsoga quadriradiata, quercus rubra, quercus robur, rumex angiocarpus, rumex acetosella, achillea millefolium, castanea sativa, setaria helvola, hypericum perforatum, hypochaeris radicata, veronica persica, melilotus albus, veronica arvensis, festuca rubra, plantago lanceolata, geranium pyrenaicum, cerastium fontanum, trifolium dubium, senecio inaequidens, ranunculus repens, erigeron sumatrensis, oxalis stricta, digitaria sanguinalis, arrhenatherum elatius, lolium perenne, pinus sylvestris, viola wittrockiana, vicia villosa, trifolium repens, potentilla indica, betula pendula, rumex acetosa, lolium multiflorum, vicia hirsuta, tanacetum vulgare, oenothera glazioviana, cirsium arvense