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