be, arr. leuven, quercus rubra, castanea sativa, quercus robur, prunus serotina, betula pendula, sorbus aucuparia, pinus sylvestris, frangula alnus, lonicera periclymenum, vaccinium myrtillus, molinia caerulea, avenella flexuosa, fagus sylvatica, deschampsia flexuosa, dryopteris carthusiana, dryopteris dilatata, carex pilulifera, calluna vulgaris, teucrium scorodonia, ilex aquifolium, pteridium aquilinum, betula pubescens, pinus nigra, pseudotsuga menziesii, acer pseudoplatanus, corylus avellana, quercus petraea, holcus mollis, agrostis capillaris, amelanchier lamarckii, hedera helix, convallaria majalis, robinia pseudoacacia, cytisus scoparius, sambucus nigra, larix kaempferi, populus tremula, juncus effusus, polygonatum multiflorum, prunus avium, luzula pilosa, salix caprea, carpinus betulus, picea abies, athyrium filix-femina, rhododendron ponticum, pinus pinaster, rumex angiocarpus, galeopsis tetrahit, rubus plicatus