be, arr. nivelles, castanea sativa, hedera helix, fagus sylvatica, acer pseudoplatanus, corylus avellana, carpinus betulus, quercus robur, fraxinus excelsior, lonicera periclymenum, prunus avium, arum maculatum, ilex aquifolium, hyacinthoides non-scripta, polygonatum multiflorum, sambucus nigra, lamium galeobdolon, anemone nemorosa, crataegus monogyna, betula pendula, sorbus aucuparia, teucrium scorodonia, quercus petraea, pteridium aquilinum, cornus sanguinea, dryopteris filix-mas, viburnum opulus, mespilus germanica, ribes rubrum, heracleum sphondylium, circaea lutetiana, geum urbanum, convallaria majalis, acer campestre, glechoma hederacea, euphorbia amygdaloides, urtica dioica, galium aparine, salix caprea, vinca minor, ficaria verna, geranium robertianum, quercus rubra, stachys sylvatica, carex sylvatica, acer platanoides, alnus glutinosa, primula elatior, mercurialis perennis, rabelera holostea, populus tremula