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