be, arr. leuven, prunus serotina, quercus rubra, quercus robur, silene coronaria, castanea sativa, pilosella aurantiaca, lathyrus latifolius, holcus lanatus, heracleum sphondylium, arrhenatherum elatius, geranium pyrenaicum, robinia pseudoacacia, ranunculus repens, galinsoga quadriradiata, agrostis capillaris, tanacetum vulgare, urtica dioica, claytonia perfoliata, populus canadensis, potentilla indica, glechoma hederacea, echinochloa crus-galli, juncus tenuis, veronica persica, rumex acetosa, galanthus nivalis, cirsium arvense, oxalis stricta, stellaria graminea, melilotus albus, symphoricarpos albus, sambucus nigra, poa trivialis, oxalis corniculata, hypericum perforatum, acer pseudoplatanus, lonicera periclymenum, achillea millefolium, potentilla recta, vicia villosa, corylus avellana, sorbus aucuparia, betula pendula, galeopsis tetrahit, vicia hirsuta, trifolium incarnatum, lolium multiflorum, galium aparine, lolium perenne, alopecurus pratensis