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