be, arr. nivelles, fraxinus excelsior, circaea lutetiana, acer pseudoplatanus, athyrium filix-femina, fagus sylvatica, dryopteris carthusiana, quercus robur, alnus glutinosa, urtica dioica, carex remota, lonicera periclymenum, carpinus betulus, corylus avellana, glechoma hederacea, juncus effusus, dryopteris dilatata, quercus rubra, anemone nemorosa, geum urbanum, hedera helix, sorbus aucuparia, deschampsia cespitosa, sambucus nigra, lamium galeobdolon, impatiens parviflora, carex sylvatica, stachys sylvatica, oxalis acetosella, prunus serotina, betula pendula, arum maculatum, scrophularia nodosa, ranunculus repens, ajuga reptans, geranium robertianum, castanea sativa, eupatorium cannabinum, lysimachia vulgaris, polygonatum multiflorum, dryopteris filix-mas, lycopus europaeus, galeopsis tetrahit, galium aparine, ficaria verna, carex acutiformis, filipendula ulmaria, milium effusum, veronica montana, moehringia trinervia, pteridium aquilinum