be, arr. tongeren, corylus avellana, fraxinus excelsior, quercus robur, acer pseudoplatanus, hedera helix, lonicera periclymenum, arum maculatum, prunus avium, polygonatum multiflorum, carpinus betulus, sambucus nigra, anemone nemorosa, fagus sylvatica, adoxa moschatellina, crataegus monogyna, sorbus aucuparia, betula pendula, hyacinthoides non-scripta, ulmus minor, primula elatior, geum urbanum, carex sylvatica, lamium galeobdolon, cornus sanguinea, ficaria verna, circaea lutetiana, glechoma hederacea, ribes rubrum, dryopteris filix-mas, paris quadrifolia, castanea sativa, viburnum opulus, acer campestre, milium effusum, betula pubescens, dryopteris carthusiana, galium aparine, luzula pilosa, convallaria majalis, euonymus europaeus, moehringia trinervia, urtica dioica, athyrium filix-femina, mercurialis perennis, populus tremula, neottia ovata, viola reichenbachiana, geranium robertianum, quercus petraea, stachys sylvatica