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