be, arr. tongeren, corylus avellana, quercus robur, lonicera periclymenum, fraxinus excelsior, hedera helix, acer pseudoplatanus, betula pubescens, polygonatum multiflorum, arum maculatum, sorbus aucuparia, carpinus betulus, betula pendula, prunus avium, fagus sylvatica, primula elatior, anemone nemorosa, crataegus monogyna, circaea lutetiana, hyacinthoides non-scripta, sambucus nigra, lamium galeobdolon, geum urbanum, dryopteris carthusiana, carex sylvatica, adoxa moschatellina, athyrium filix-femina, dryopteris filix-mas, castanea sativa, glechoma hederacea, cornus sanguinea, urtica dioica, viburnum opulus, ficaria verna, pteridium aquilinum, mercurialis perennis, paris quadrifolia, frangula alnus, alnus glutinosa, dryopteris dilatata, galium aparine, ulmus minor, ribes rubrum, ajuga reptans, ilex aquifolium, populus tremula, teucrium scorodonia, milium effusum, luzula pilosa, moehringia trinervia, geranium robertianum