gb, hertfordshire, pteridium aquilinum, vaccinium myrtillus, betula pubescens, ilex aquifolium, avenella flexuosa, betula pendula, quercus robur, sorbus aucuparia, pinus sylvestris, fagus sylvatica, deschampsia flexuosa, lonicera periclymenum, dryopteris dilatata, calluna vulgaris, quercus petraea, molinia caerulea, castanea sativa, frangula alnus, oxalis acetosella, rubus fruticosus, hedera helix, dryopteris carthusiana, ceratocapnos claviculata, holcus mollis, carex pilulifera, galium saxatile, luzula pilosa, teucrium scorodonia, erica cinerea, corylus avellana, melampyrum pratense, picea abies, struthiopteris spicant, pseudotsuga menziesii, digitalis purpurea, hyacinthoides non-scripta, erica tetralix, rhododendron ponticum, agrostis capillaris, acer pseudoplatanus, ulex europaeus, quercus rubra, dryopteris filix-mas, athyrium filix-femina, taxus baccata, picea sitchensis, rabelera holostea, juncus effusus, populus tremula, pinus pinaster