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