be, arr. tongeren, fraxinus excelsior, quercus robur, corylus avellana, hedera helix, lonicera periclymenum, carpinus betulus, fagus sylvatica, circaea lutetiana, arum maculatum, acer pseudoplatanus, betula pubescens, crataegus monogyna, alnus glutinosa, dryopteris carthusiana, polygonatum multiflorum, athyrium filix-femina, lamium galeobdolon, anemone nemorosa, primula elatior, geum urbanum, carex sylvatica, prunus avium, dryopteris filix-mas, sorbus aucuparia, glechoma hederacea, deschampsia cespitosa, viburnum opulus, mercurialis perennis, oxalis acetosella, urtica dioica, milium effusum, geranium robertianum, paris quadrifolia, filipendula ulmaria, sambucus nigra, dryopteris dilatata, betula pendula, ficaria verna, ilex aquifolium, galium aparine, acer campestre, cornus sanguinea, euonymus europaeus, hyacinthoides non-scripta, adoxa moschatellina, brachypodium sylvaticum, angelica sylvestris, silene dioica, carex remota, viola reichenbachiana