be, arr. tongeren, quercus robur, fraxinus excelsior, lonicera periclymenum, corylus avellana, sambucus nigra, betula pendula, acer pseudoplatanus, urtica dioica, sorbus aucuparia, hedera helix, holcus lanatus, galium aparine, crataegus monogyna, glechoma hederacea, prunus avium, heracleum sphondylium, polygonatum multiflorum, poa trivialis, ranunculus repens, geum urbanum, betula pubescens, fagus sylvatica, cirsium arvense, agrostis capillaris, frangula alnus, castanea sativa, galeopsis tetrahit, cornus sanguinea, dactylis glomerata, arrhenatherum elatius, salix caprea, carpinus betulus, arum maculatum, adoxa moschatellina, lolium perenne, teucrium scorodonia, holcus mollis, dryopteris carthusiana, quercus rubra, moehringia trinervia, hypericum perforatum, silene dioica, dryopteris filix-mas, anemone nemorosa, dryopteris dilatata, ranunculus acris, lamium galeobdolon, populus tremula, geranium robertianum, populus canadensis