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