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