be, arr. leuven, quercus rubra, castanea sativa, prunus serotina, potentilla indica, acer pseudoplatanus, quercus robur, rhododendron ponticum, fagus sylvatica, sorbus aucuparia, sambucus nigra, robinia pseudoacacia, corylus avellana, lamium galeobdolon, silene coronaria, lonicera periclymenum, amelanchier lamarckii, betula pendula, hedera helix, fraxinus excelsior, symphoricarpos albus, phytolacca acinosa, urtica dioica, galinsoga quadriradiata, glechoma hederacea, galanthus nivalis, arum italicum, juncus tenuis, ilex aquifolium, pinus sylvestris, dryopteris dilatata, hyacinthoides non-scripta, polygonatum multiflorum, claytonia perfoliata, geum macrophyllum, oxalis stricta, geranium macrorrhizum, impatiens parviflora, prunus avium, ribes rubrum, carpinus betulus, alnus glutinosa, aesculus hippocastanum, erigeron sumatrensis, pentaglottis sempervirens, circaea lutetiana, pilosella aurantiaca, athyrium filix-femina, frangula alnus, dryopteris carthusiana, eupatorium cannabinum