be, arr. leuven, heracleum sphondylium, galanthus nivalis, symphytum officinale, bidens frondosa, geranium pyrenaicum, urtica dioica, filipendula ulmaria, arum italicum, potentilla indica, ranunculus repens, angelica sylvestris, impatiens glandulifera, quercus rubra, lythrum salicaria, glechoma hederacea, lathyrus latifolius, alnus glutinosa, galinsoga quadriradiata, cirsium oleraceum, cardamine pratensis, symphoricarpos albus, galium aparine, juglans regia, humulus lupulus, veronica persica, pilosella aurantiaca, castanea sativa, sambucus nigra, echinochloa crus-galli, geranium phaeum, calystegia sepium, heracleum mantegazzianum, populus canadensis, lathraea clandestina, prunus serotina, iris pseudacorus, silene coronaria, lycopus europaeus, robinia pseudoacacia, phalaris arundinacea, poa trivialis, lysimachia vulgaris, fraxinus excelsior, galeopsis tetrahit, tanacetum vulgare, melilotus albus, cirsium arvense, viburnum opulus, oxalis stricta, holcus lanatus