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