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