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