be, arr. leuven, castanea sativa, quercus rubra, quercus robur, acer pseudoplatanus, fagus sylvatica, prunus serotina, lonicera periclymenum, sorbus aucuparia, corylus avellana, athyrium filix-femina, fraxinus excelsior, betula pendula, dryopteris dilatata, hedera helix, pteridium aquilinum, dryopteris carthusiana, sambucus nigra, frangula alnus, juncus effusus, polygonatum multiflorum, urtica dioica, lamium galeobdolon, alnus glutinosa, teucrium scorodonia, anemone nemorosa, carpinus betulus, pinus sylvestris, prunus avium, ilex aquifolium, rhododendron ponticum, hyacinthoides non-scripta, carex pilulifera, circaea lutetiana, vaccinium myrtillus, glechoma hederacea, betula pubescens, deschampsia flexuosa, convallaria majalis, avenella flexuosa, luzula pilosa, molinia caerulea, potentilla indica, ranunculus repens, holcus mollis, robinia pseudoacacia, carex remota, dryopteris filix-mas, salix caprea, plantago subulata, scrophularia nodosa