be, arr. leuven, populus canadensis, quercus robur, urtica dioica, glechoma hederacea, cirsium arvense, holcus lanatus, arrhenatherum elatius, ranunculus repens, sambucus nigra, betula pendula, prunus serotina, agrostis capillaris, heracleum sphondylium, galeopsis tetrahit, galium aparine, fraxinus excelsior, poa trivialis, angelica sylvestris, crataegus monogyna, alnus glutinosa, quercus rubra, acer pseudoplatanus, corylus avellana, symphytum officinale, juncus effusus, sorbus aucuparia, geum urbanum, filipendula ulmaria, alopecurus pratensis, lonicera periclymenum, calystegia sepium, hypericum perforatum, tanacetum vulgare, dactylis glomerata, rumex acetosa, phragmites australis, salix caprea, equisetum arvense, stellaria graminea, ribes rubrum, phalaris arundinacea, holcus mollis, moehringia trinervia, ranunculus acris, frangula alnus, elymus repens, cirsium palustre, humulus lupulus, alnus incana, festuca rubra