gb, hertfordshire, quercus robur, pteridium aquilinum, fraxinus excelsior, urtica dioica, betula pubescens, ilex aquifolium, rubus fruticosus, lonicera periclymenum, ranunculus repens, betula pendula, galium aparine, fagus sylvatica, hyacinthoides non-scripta, crataegus monogyna, oxalis acetosella, geum urbanum, hedera helix, circaea lutetiana, mercurialis perennis, viola riviniana, holcus lanatus, dryopteris dilatata, corylus avellana, sorbus aucuparia, geranium robertianum, agrostis capillaris, deschampsia cespitosa, rabelera holostea, juncus effusus, poa trivialis, holcus mollis, veronica chamaedrys, acer pseudoplatanus, dryopteris filix-mas, digitalis purpurea, avenella flexuosa, alnus glutinosa, pinus sylvestris, quercus petraea, brachypodium sylvaticum, conopodium majus, rhododendron ponticum, anthoxanthum odoratum, arum maculatum, dactylorhiza fuchsii, anemone nemorosa, lysimachia nemorum, teucrium scorodonia, athyrium filix-femina, deschampsia flexuosa