be, arr. oudenaarde, corylus avellana, quercus robur, lonicera periclymenum, fraxinus excelsior, acer pseudoplatanus, hedera helix, sorbus aucuparia, polygonatum multiflorum, sambucus nigra, castanea sativa, fagus sylvatica, adoxa moschatellina, prunus avium, athyrium filix-femina, anemone nemorosa, arum maculatum, alnus glutinosa, lamium galeobdolon, crataegus monogyna, dryopteris dilatata, primula elatior, betula pubescens, urtica dioica, betula pendula, hyacinthoides non-scripta, frangula alnus, carpinus betulus, quercus rubra, pteridium aquilinum, dryopteris carthusiana, geum urbanum, ficaria verna, circaea lutetiana, viburnum opulus, glechoma hederacea, silene dioica, ribes rubrum, ilex aquifolium, teucrium scorodonia, dryopteris filix-mas, galium aparine, prunus serotina, holcus mollis, populus canadensis, heracleum sphondylium, moehringia trinervia, angelica sylvestris, oxalis acetosella, geranium robertianum, carex sylvatica