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