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