be, arr. nivelles, fagus sylvatica, acer pseudoplatanus, castanea sativa, quercus robur, quercus rubra, athyrium filix-femina, lonicera periclymenum, dryopteris carthusiana, fraxinus excelsior, circaea lutetiana, carpinus betulus, corylus avellana, prunus serotina, hedera helix, pteridium aquilinum, dryopteris dilatata, anemone nemorosa, ilex aquifolium, sorbus aucuparia, teucrium scorodonia, carex remota, juncus effusus, oxalis acetosella, betula pendula, carex sylvatica, lamium galeobdolon, urtica dioica, alnus glutinosa, deschampsia cespitosa, hyacinthoides non-scripta, glechoma hederacea, sambucus nigra, dryopteris filix-mas, milium effusum, polygonatum multiflorum, quercus petraea, ajuga reptans, prunus avium, luzula pilosa, plantago subulata, carex pilulifera, geum urbanum, pinus sylvestris, convallaria majalis, lysimachia nemorum, arum maculatum, veronica montana, scrophularia nodosa, impatiens parviflora, galeopsis tetrahit