be, arr. leuven, quercus robur, quercus rubra, prunus serotina, juncus effusus, sorbus aucuparia, betula pendula, amelanchier lamarckii, castanea sativa, holcus lanatus, alnus glutinosa, lonicera periclymenum, silene coronaria, frangula alnus, ranunculus repens, urtica dioica, potentilla indica, bidens frondosa, agrostis capillaris, populus canadensis, molinia caerulea, lysimachia vulgaris, pinus sylvestris, galinsoga quadriradiata, galeopsis tetrahit, glechoma hederacea, juncus tenuis, sambucus nigra, persicaria hydropiper, lythrum salicaria, phragmites australis, corylus avellana, poa trivialis, cardamine pratensis, heracleum sphondylium, lycopus europaeus, claytonia perfoliata, cirsium arvense, cirsium palustre, phytolacca acinosa, iris pseudacorus, betula pubescens, pilosella aurantiaca, dryopteris carthusiana, arrhenatherum elatius, lathyrus latifolius, holcus mollis, fraxinus excelsior, geum macrophyllum, rhododendron ponticum, symphytum officinale