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