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