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