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