be, arr. leuven, quercus robur, agrostis capillaris, holcus lanatus, arrhenatherum elatius, prunus serotina, hypericum perforatum, betula pendula, cirsium arvense, rumex angiocarpus, achillea millefolium, urtica dioica, plantago lanceolata, rumex acetosa, festuca rubra, ranunculus repens, stellaria graminea, quercus rubra, tanacetum vulgare, rumex acetosella, cerastium fontanum, anthoxanthum odoratum, hypochaeris radicata, lolium perenne, elymus repens, dactylis glomerata, populus canadensis, cerastium holosteoides, sorbus aucuparia, trifolium repens, erigeron canadensis, vicia hirsuta, poa trivialis, luzula campestris, jacobaea vulgaris, holcus mollis, sambucus nigra, trifolium dubium, glechoma hederacea, hieracium umbellatum, pinus sylvestris, galium aparine, juncus effusus, carex hirta, crataegus monogyna, acer pseudoplatanus, vicia sativa, poa pratensis, equisetum arvense, heracleum sphondylium, ranunculus acris