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