be, arr. leuven, castanea sativa, betula pendula, pinus sylvestris, quercus robur, quercus rubra, carex pilulifera, prunus serotina, teucrium scorodonia, fagus sylvatica, avenella flexuosa, molinia caerulea, pteridium aquilinum, sorbus aucuparia, calluna vulgaris, lonicera periclymenum, frangula alnus, vaccinium myrtillus, deschampsia flexuosa, dryopteris carthusiana, agrostis capillaris, dryopteris dilatata, pinus nigra, ilex aquifolium, acer pseudoplatanus, juncus effusus, holcus mollis, cytisus scoparius, quercus petraea, betula pubescens, salix caprea, juncus conglomeratus, holcus lanatus, corylus avellana, pseudotsuga menziesii, rumex angiocarpus, veronica officinalis, rumex acetosella, luzula multiflora, convallaria majalis, hedera helix, calamagrostis epigejos, luzula pilosa, carpinus betulus, hypericum perforatum, athyrium filix-femina, sambucus nigra, picea abies, moehringia trinervia, hypericum pulchrum, populus tremula