be, arr. leuven, castanea sativa, lathyrus latifolius, phacelia tanacetifolia, quercus rubra, heracleum sphondylium, quercus robur, juglans regia, geranium pyrenaicum, trifolium incarnatum, corylus avellana, robinia pseudoacacia, pilosella aurantiaca, prunus serotina, veronica persica, geranium macrorrhizum, arum italicum, euphorbia lathyris, papaver somniferum, teucrium scorodonia, silene coronaria, lonicera periclymenum, fagopyrum esculentum, acer pseudoplatanus, prunus avium, hedera helix, hyacinthoides non-scripta, symphytum officinale, tanacetum vulgare, fraxinus excelsior, betula pendula, mespilus germanica, echinochloa crus-galli, sambucus nigra, eschscholzia californica, malva sylvestris, carpinus betulus, cornus sanguinea, panicum miliaceum, viburnum opulus, glechoma hederacea, holcus lanatus, galinsoga quadriradiata, hordeum vulgare, datura stramonium, hypericum perforatum, medicago sativa, silybum marianum, arrhenatherum elatius, nicandra physalodes, triticum aestivum