be, arr. leuven, pilosella aurantiaca, oxalis corniculata, silene coronaria, lathyrus latifolius, viola wittrockiana, phytolacca acinosa, claytonia perfoliata, galinsoga quadriradiata, potentilla indica, geranium pyrenaicum, echinochloa crus-galli, lepidium didymum, prunus serotina, veronica persica, erigeron sumatrensis, setaria helvola, geranium macrorrhizum, quercus rubra, holcus lanatus, castanea sativa, ranunculus repens, trifolium incarnatum, quercus robur, papaver somniferum, heracleum sphondylium, oxalis stricta, euphorbia lathyris, vicia villosa, nicandra physalodes, melilotus albus, arrhenatherum elatius, eschscholzia californica, cerastium fontanum, erigeron canadensis, agrostis capillaris, lolium multiflorum, achillea millefolium, juncus tenuis, cymbalaria muralis, phacelia tanacetifolia, rumex acetosa, lolium perenne, plantago lanceolata, centaurea cyanus, tanacetum vulgare, potentilla recta, juncus effusus, matricaria discoidea, lepidium virginicum, lunaria annua