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