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