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