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