be, arr. leuven, quercus robur, prunus serotina, quercus rubra, betula pendula, sorbus aucuparia, lonicera periclymenum, castanea sativa, teucrium scorodonia, agrostis capillaris, pinus sylvestris, frangula alnus, acer pseudoplatanus, dryopteris carthusiana, juncus effusus, corylus avellana, urtica dioica, holcus lanatus, dryopteris dilatata, molinia caerulea, holcus mollis, fagus sylvatica, pteridium aquilinum, ranunculus repens, vaccinium myrtillus, sambucus nigra, athyrium filix-femina, avenella flexuosa, carex pilulifera, deschampsia flexuosa, salix caprea, galeopsis tetrahit, glechoma hederacea, cirsium arvense, betula pubescens, calluna vulgaris, juncus conglomeratus, fraxinus excelsior, alnus glutinosa, moehringia trinervia, hedera helix, hypericum perforatum, polygonatum multiflorum, scrophularia nodosa, anthoxanthum odoratum, populus canadensis, rumex angiocarpus, convallaria majalis, anemone nemorosa, carpinus betulus, cytisus scoparius