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