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