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