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