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