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