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