gb, hertfordshire, pteridium aquilinum, ilex aquifolium, lonicera periclymenum, hedera helix, quercus robur, fagus sylvatica, hyacinthoides non-scripta, crataegus monogyna, fraxinus excelsior, betula pubescens, corylus avellana, quercus petraea, teucrium scorodonia, betula pendula, mercurialis perennis, rubus fruticosus, viola riviniana, arum maculatum, castanea sativa, galium aparine, circaea lutetiana, dryopteris dilatata, geum urbanum, dryopteris filix-mas, acer pseudoplatanus, rabelera holostea, urtica dioica, sorbus aucuparia, holcus mollis, geranium robertianum, ulex europaeus, digitalis purpurea, primula vulgaris, oxalis acetosella, avenella flexuosa, euphorbia amygdaloides, brachypodium sylvaticum, dioscorea communis, deschampsia flexuosa, agrostis capillaris, prunus spinosa, holcus lanatus, calluna vulgaris, conopodium majus, prunus avium, ranunculus repens, veronica chamaedrys, carex sylvatica, melica uniflora, primula acaulis