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