be, arr. leuven, prunus serotina, quercus robur, quercus rubra, betula pendula, castanea sativa, sorbus aucuparia, lonicera periclymenum, teucrium scorodonia, pinus sylvestris, acer pseudoplatanus, fagus sylvatica, dryopteris carthusiana, carex pilulifera, frangula alnus, dryopteris dilatata, pteridium aquilinum, agrostis capillaris, avenella flexuosa, molinia caerulea, juncus effusus, corylus avellana, deschampsia flexuosa, vaccinium myrtillus, holcus mollis, calluna vulgaris, salix caprea, sambucus nigra, urtica dioica, holcus lanatus, athyrium filix-femina, betula pubescens, juncus conglomeratus, pinus nigra, fraxinus excelsior, glechoma hederacea, hedera helix, ilex aquifolium, convallaria majalis, carpinus betulus, luzula pilosa, cytisus scoparius, ranunculus repens, moehringia trinervia, calamagrostis epigejos, galeopsis tetrahit, dryopteris filix-mas, cirsium arvense, prunus avium, polygonatum multiflorum, robinia pseudoacacia