be, arr. leuven, quercus robur, corylus avellana, fraxinus excelsior, sorbus aucuparia, acer pseudoplatanus, lonicera periclymenum, sambucus nigra, hedera helix, polygonatum multiflorum, alnus glutinosa, athyrium filix-femina, anemone nemorosa, dryopteris carthusiana, circaea lutetiana, prunus avium, geum urbanum, prunus serotina, adoxa moschatellina, glechoma hederacea, fagus sylvatica, urtica dioica, quercus rubra, dryopteris dilatata, carpinus betulus, crataegus monogyna, lamium galeobdolon, ficaria verna, ribes rubrum, arum maculatum, frangula alnus, betula pendula, betula pubescens, primula elatior, viburnum opulus, castanea sativa, galium aparine, moehringia trinervia, silene dioica, deschampsia cespitosa, prunus padus, filipendula ulmaria, humulus lupulus, oxalis acetosella, paris quadrifolia, populus canadensis, geranium robertianum, ulmus minor, stachys sylvatica, carex sylvatica, dryopteris filix-mas