be, arr. tongeren, quercus rubra, prunus serotina, quercus robur, sorbus aucuparia, castanea sativa, pinus sylvestris, betula pendula, frangula alnus, lonicera periclymenum, amelanchier lamarckii, dryopteris dilatata, dryopteris carthusiana, vaccinium myrtillus, molinia caerulea, fagus sylvatica, avenella flexuosa, deschampsia flexuosa, betula pubescens, rhododendron ponticum, pteridium aquilinum, ilex aquifolium, acer pseudoplatanus, robinia pseudoacacia, corylus avellana, calluna vulgaris, carex pilulifera, teucrium scorodonia, juncus effusus, sambucus nigra, pinus nigra, pseudotsuga menziesii, ceratocapnos claviculata, alnus glutinosa, potentilla indica, larix kaempferi, galeopsis tetrahit, athyrium filix-femina, agrostis capillaris, geum macrophyllum, hedera helix, juncus tenuis, polygonatum multiflorum, holcus mollis, maianthemum bifolium, urtica dioica, impatiens parviflora, picea abies, convallaria majalis, prunus avium, lamium galeobdolon