be, arr. tongeren, pinus sylvestris, quercus rubra, prunus serotina, quercus robur, betula pendula, molinia caerulea, frangula alnus, sorbus aucuparia, calluna vulgaris, vaccinium myrtillus, avenella flexuosa, castanea sativa, deschampsia flexuosa, betula pubescens, amelanchier lamarckii, lonicera periclymenum, dryopteris carthusiana, dryopteris dilatata, fagus sylvatica, carex pilulifera, erica tetralix, pteridium aquilinum, ceratocapnos claviculata, ilex aquifolium, teucrium scorodonia, agrostis capillaris, pinus nigra, pseudotsuga menziesii, rhododendron ponticum, rumex acetosella, rumex angiocarpus, juncus effusus, pinus strobus, cytisus scoparius, holcus mollis, quercus petraea, pinus pinaster, robinia pseudoacacia, juncus tenuis, larix kaempferi, festuca filiformis, populus tremula, picea abies, melampyrum pratense, corylus avellana, galium saxatile, holcus lanatus, agrostis vinealis, erica cinerea, hedera helix