be, arr. leuven, prunus serotina, quercus rubra, quercus robur, castanea sativa, sorbus aucuparia, betula pendula, frangula alnus, lonicera periclymenum, amelanchier lamarckii, pinus sylvestris, molinia caerulea, acer pseudoplatanus, dryopteris dilatata, robinia pseudoacacia, dryopteris carthusiana, corylus avellana, avenella flexuosa, fagus sylvatica, betula pubescens, sambucus nigra, deschampsia flexuosa, vaccinium myrtillus, ilex aquifolium, pteridium aquilinum, hedera helix, calluna vulgaris, teucrium scorodonia, rhododendron ponticum, carex pilulifera, pinus nigra, polygonatum multiflorum, prunus avium, agrostis capillaris, potentilla indica, holcus mollis, alnus glutinosa, populus tremula, convallaria majalis, juncus effusus, fraxinus excelsior, silene coronaria, holcus lanatus, salix caprea, athyrium filix-femina, galeopsis tetrahit, urtica dioica, crataegus monogyna, maianthemum bifolium, carpinus betulus, cytisus scoparius