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