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