be, arr. tongeren, prunus serotina, quercus rubra, quercus robur, sorbus aucuparia, pinus sylvestris, betula pendula, avenella flexuosa, frangula alnus, deschampsia flexuosa, dryopteris carthusiana, fagus sylvatica, lonicera periclymenum, dryopteris dilatata, vaccinium myrtillus, molinia caerulea, pseudotsuga menziesii, amelanchier lamarckii, ilex aquifolium, castanea sativa, betula pubescens, carex pilulifera, calluna vulgaris, agrostis capillaris, ceratocapnos claviculata, pteridium aquilinum, holcus mollis, teucrium scorodonia, galeopsis tetrahit, pinus nigra, larix kaempferi, hedera helix, corylus avellana, acer pseudoplatanus, juncus effusus, rubus idaeus, moehringia trinervia, picea abies, quercus petraea, holcus lanatus, rumex angiocarpus, sambucus nigra, galium saxatile, rumex acetosella, rubus plicatus, rubus gratus, populus tremula, maianthemum bifolium, robinia pseudoacacia, impatiens parviflora, cytisus scoparius