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