be, arr. halle-vilvoorde, arum italicum, castanea sativa, acer pseudoplatanus, potentilla indica, fraxinus excelsior, glechoma hederacea, geranium macrorrhizum, hedera helix, symphytum officinale, sambucus nigra, phytolacca acinosa, corylus avellana, fagus sylvatica, hyacinthoides non-scripta, urtica dioica, ribes rubrum, allium ursinum, arum maculatum, carpinus betulus, alnus glutinosa, aesculus hippocastanum, galanthus nivalis, geranium pyrenaicum, heracleum sphondylium, eupatorium cannabinum, juglans regia, rhododendron ponticum, galium aparine, quercus rubra, quercus robur, lamium galeobdolon, ranunculus repens, humulus lupulus, pilosella aurantiaca, alliaria petiolata, circaea lutetiana, ilex aquifolium, prunus padus, viburnum opulus, pentaglottis sempervirens, lathyrus latifolius, veronica persica, prunus laurocerasus, mespilus germanica, symphoricarpos albus, taxodium distichum, claytonia perfoliata, cosmos bipinnatus, lamium album, tanacetum parthenium