be, arr. leuven, quercus rubra, prunus serotina, quercus robur, castanea sativa, silene coronaria, amelanchier lamarckii, sorbus aucuparia, pinus sylvestris, betula pendula, frangula alnus, lonicera periclymenum, agrostis capillaris, pilosella aurantiaca, calluna vulgaris, molinia caerulea, robinia pseudoacacia, avenella flexuosa, claytonia perfoliata, potentilla indica, deschampsia flexuosa, juncus tenuis, holcus lanatus, oxalis corniculata, galinsoga quadriradiata, teucrium scorodonia, lathyrus latifolius, vaccinium myrtillus, rhododendron ponticum, rumex angiocarpus, acer pseudoplatanus, rumex acetosella, dryopteris dilatata, holcus mollis, carex pilulifera, cytisus scoparius, erigeron canadensis, corylus avellana, phytolacca acinosa, sambucus nigra, echinochloa crus-galli, fagus sylvatica, hypericum perforatum, hieracium umbellatum, betula pubescens, oxalis stricta, juncus effusus, arrhenatherum elatius, dryopteris carthusiana, erigeron sumatrensis, pteridium aquilinum