be, arr. leuven, urtica dioica, populus canadensis, heracleum sphondylium, ranunculus repens, poa trivialis, galium aparine, glechoma hederacea, symphytum officinale, quercus robur, arrhenatherum elatius, holcus lanatus, fraxinus excelsior, alnus glutinosa, sambucus nigra, calystegia sepium, phalaris arundinacea, cirsium arvense, alopecurus pratensis, filipendula ulmaria, phragmites australis, rumex obtusifolius, humulus lupulus, angelica sylvestris, dactylis glomerata, agrostis stolonifera, lolium perenne, prunus serotina, anthriscus sylvestris, galeopsis tetrahit, crataegus monogyna, galanthus nivalis, ranunculus acris, quercus rubra, corylus avellana, equisetum arvense, juncus effusus, cardamine pratensis, ficaria verna, elymus repens, ribes rubrum, iris pseudacorus, acer pseudoplatanus, silene dioica, aegopodium podagraria, lythrum salicaria, epilobium hirsutum, rumex acetosa, tanacetum vulgare, lamium album, impatiens glandulifera