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