be, arr. oudenaarde, castanea sativa, acer pseudoplatanus, quercus rubra, corylus avellana, quercus robur, sambucus nigra, fraxinus excelsior, hedera helix, lonicera periclymenum, prunus serotina, polygonatum multiflorum, sorbus aucuparia, lamium galeobdolon, fagus sylvatica, prunus avium, hyacinthoides non-scripta, arum maculatum, anemone nemorosa, primula elatior, carpinus betulus, athyrium filix-femina, betula pendula, dryopteris dilatata, populus canadensis, urtica dioica, adoxa moschatellina, galanthus nivalis, mespilus germanica, robinia pseudoacacia, ficaria verna, circaea lutetiana, glechoma hederacea, pteridium aquilinum, crataegus monogyna, ilex aquifolium, heracleum sphondylium, geum urbanum, dryopteris filix-mas, ribes rubrum, salix caprea, alnus incana, dryopteris carthusiana, potentilla indica, teucrium scorodonia, galium aparine, silene dioica, alnus glutinosa, vinca minor, convallaria majalis, frangula alnus