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