be, arr. leuven, quercus rubra, castanea sativa, prunus serotina, quercus robur, sorbus aucuparia, pinus sylvestris, fagus sylvatica, betula pendula, vaccinium myrtillus, lonicera periclymenum, dryopteris dilatata, acer pseudoplatanus, frangula alnus, pinus nigra, avenella flexuosa, dryopteris carthusiana, molinia caerulea, carex pilulifera, deschampsia flexuosa, ilex aquifolium, pteridium aquilinum, amelanchier lamarckii, rhododendron ponticum, teucrium scorodonia, robinia pseudoacacia, calluna vulgaris, corylus avellana, convallaria majalis, pseudotsuga menziesii, hedera helix, potentilla indica, betula pubescens, luzula pilosa, larix kaempferi, athyrium filix-femina, sambucus nigra, maianthemum bifolium, picea abies, prunus avium, polygonatum multiflorum, juncus tenuis, quercus petraea, juncus effusus, agrostis capillaris, plantago subulata, lamium galeobdolon, salix caprea, larix decidua, carpinus betulus, pinus strobus