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