be, arr. leuven, bidens frondosa, urtica dioica, quercus rubra, prunus serotina, populus canadensis, ranunculus repens, heracleum sphondylium, potentilla indica, holcus lanatus, quercus robur, impatiens glandulifera, galinsoga quadriradiata, poa trivialis, filipendula ulmaria, juncus effusus, galanthus nivalis, lathyrus latifolius, cirsium arvense, alnus glutinosa, symphytum officinale, angelica sylvestris, amelanchier lamarckii, alopecurus pratensis, arrhenatherum elatius, juncus tenuis, galium aparine, phalaris arundinacea, lycopus europaeus, silene coronaria, lolium multiflorum, tanacetum vulgare, persicaria hydropiper, lythrum salicaria, cardamine pratensis, rumex acetosa, symphoricarpos albus, pilosella aurantiaca, galeopsis tetrahit, glechoma hederacea, lysimachia vulgaris, geranium pyrenaicum, melilotus albus, rumex obtusifolius, heracleum mantegazzianum, phragmites australis, cirsium palustre, iris pseudacorus, stellaria graminea, crassula helmsii, agrostis capillaris