| Vernacular name |
Scientific name |
| LOWER
PLANTS, LICHENS AND FUNGI |
| A wax-cap fungus |
Hygrocybe species |
| Chalk comb-moss |
Ctenidium molluscum |
| Common smoothcap |
Atrichum undulatum |
| Common stinkhorn |
Phallus impudicus |
| Crisped neckera |
Neckera crispa |
| Donn's grimmia |
Grimmia donniana |
| Flat neckera |
Neckera complanata |
| Fox-tail feather-moss |
Thamnobryum alopecurum |
| Greater fork-moss |
Dicranum majus |
| Rambling tail-moss |
Anomodon viticulosus |
| Wall scalewort |
Porella platyphylla |
| Yellow map lichen |
Rhizocarpon geographicum |
| HIGHER
PLANTS |
| Adder's-tongue |
Ophioglossum vulgatum |
| Alder |
Alnus glutinosa |
| Alpine penny-cress |
Thlaspi caerulescens |
| Alternate-leaved golden-saxifrage |
Chrysosplenium alternifolium |
| Amphibious bistort |
Persicaria amphibian |
| Ash |
Fraxinus excelsior |
| Bee orchid |
Ophrys apifera |
| Beech |
Fagus sylvatica |
| Bell heather |
Erica cinerea |
| Betony |
Stachys officinalis |
| Bilberry |
Vaccinium myrtillus |
| Bitter-vetch |
Lathyrus linifolius |
| Bluebell |
Hyacinthoides non-scripta |
| Bog asphodel |
Narthecium ossifragum |
| Bog pimpernel |
Anagallis tenella |
| Bottle sedge |
Carex rostrata |
| Bracken |
Pteridium aquilinum |
| Bramble |
Rubus fruticosus |
| Brittle bladder-fern |
Cystopteris fragilis |
| Broad buckler-fern |
Dryopteris dilatata |
| Broad-leaved helleborine |
Epipactis helleborine |
| Broad-leaved pondweed |
Potamogeton natans |
| Brown sedge |
Carex disticha |
| Buckthorn |
Rhamnus cathartica |
| Bulbous rush |
Juncus bulbosus |
| Carline thistle |
Carlina vulgaris |
| Cheddar pink |
Dianthus gratianopolitanus |
| Common bent |
Agrostis capillaris |
| Common bird's-foot-trefoil |
Lotus corniculatus |
| Common knapweed |
Centaurea nigra |
| Common rock-rose |
Helianthemum nummularium |
| Common sorrel |
Rumex acetosa |
| Common spike-rush |
Eleocharis palustris |
| Common spotted orchid |
Dactylorhiza fuchsii |
| Common whitlowgrass |
Erophila verna |
| Common yellow-sedge |
Carex viridula ssp .oedocarpa |
| Cowslip |
Primula veris |
| Crested hair-grass |
Koeleria macrantha |
| Cross-leaved heath |
Erica tetralix |
| Cuckooflower |
Cardamine pratensis |
| Devil's-bit scabious |
Succisa pratensis |
| Dog's-mercury |
Mercurialis perennis |
| Dogwood |
Cornus sanguinea |
| Dwarf mouse-ear |
Cerastium pumilum |
| Early forget-me-not |
Myosotis ramosissima |
| Early purple orchid |
Orchis mascula |
| Elder |
Sambucus nigra |
| Enchanter's-nightshade |
Circaea lutetiana |
| Eyebright |
Euphrasia officinalis |
| Fairy flax |
Linum catharticum |
| Field maple |
Acer campestre |
| Flea sedge |
Carex pulicaris |
| Foxglove |
Digitalis purpurea |
| Glaucous sedge |
Carex flacca |
| Gorse |
Ulex europaeus |
| Greater bird's-foot trefoil |
Lotus pedunculatus |
| Greater butterfly orchid |
Platanthera chlorantha |
| Green-ribbed sedge |
Carex binervis |
| Green-winged orchid |
Orchis morio |
| Grey willow |
Salix cinerea |
| Guelder-rose |
Viburnum opulus |
| Hairy rock-cress |
Arabis hirsuta |
| Hairy wood-rush |
Luzula pilosa |
| Hard fern |
Blechnum spicant |
| Harebell |
Campanula rotundifolia |
| Hare's-tail cottongrass |
Eriophorum vaginatum |
| Hart's-tongue |
Phyllitis scolopendrium |
| Hawthorn |
Crataegus monogyna |
| Hazel |
Corylus avellana |
| Heath bedstraw |
Galium saxatile |
| Heath rush |
Juncus squarrosus |
| Heath spotted orchid |
Dactylorhiza maculata |
| Heath-grass |
Danthonia decumbens |
| Herb Paris |
Paris quadrifolia |
| Herb Robert |
Geranium robertianum |
| Honeysuckle |
Lonicera periclymenum |
| Hornbeam |
Carpinus betulus |
| Intermediate polypody |
Polypodium interjectum |
| Kidney vetch |
Anthyllis vulneraria |
| Lady fern |
Athyrium filix-femina |
| Lady's bedstraw |
Galium verum |
| Large thyme |
Thymus pulegioides |
| Lesser meadow-rue |
Thalictrum minus |
| Limestone fern |
Gymnocarpium robertianum |
| Ling |
Calluna vulgaris |
| Madder |
Rubia peregrina |
| Maidenhair spleenwort |
Asplenium trichomanes |
| Male fern |
Dryopteris filix-mas |
| Mare's-tail |
Hippuris vulgaris |
| Marsh cudweed |
Gnaphalium uliginosum |
| Marsh thistle |
Cirsium palustre |
| Marsh marigold |
Caltha palustris |
| Meadow oat-grass |
Helictotrichon pratense |
| Meadow saffron |
Colchicum autumnale |
| Meadow vetchling |
Lathyrus pratensis |
| Monk's-hood |
Aconitum napellus |
| Moschatel |
Adoxa moschatellina |
| Musk thistle |
Carduus nutans |
| Nettle-leaved bellflower |
Campanula trachelium |
| Opposite-leaved golden-saxifrage |
Chrysosplenium oppositifolium |
| Pedunculate oak |
Quercus robur |
| Pignut |
Conopodium majus |
| Pill sedge |
Carex pilulifera |
| Plougman's-spikenard |
Inula conyzae |
| Primrose |
Primula vulgaris |
| Purple gromwell |
Lithospermum purpureocaeruleum |
| Purple moor-grass |
Molinia caerulea |
| Pyramidal orchid |
Anacamptis pyramidalis |
| Quaking-grass |
Briza media |
| Ragged Robin |
Lychnis flos-cuculi |
| Ramsons |
Allium ursinum |
| Rough hawkbit |
Leontodon hispidus |
| Rowan |
Sorbus aucuparia |
| Rue-leaved saxifrage |
Saxifraga tridactylites |
| Rustyback |
Ceterach officinarum |
| Salad burnet |
Sanguisorba minor |
| Sanicle |
Sanicula europaea |
| Sea campion |
Silene uniflora |
| Sea stork's-bill |
Erodium maritimum |
| Sheep's-fescue |
Festuca ovina |
| Slender bedstraw |
Galium pumilum |
| Small scabious |
Scabiosa columbaria |
| Small-leaved lime |
Tilia cordata |
| Soft shield-fern |
Polystichum setiferum |
| Soft-rush |
Juncus effusus |
| Solomon's-seal |
Polygonatum multiflorum |
| Sorbus anglica |
Sorbus anglica |
| Spindle |
Euonymus europaeus |
| Spring cinquefoil |
Potentilla neumanniana |
| Spring sandwort |
Minuartia verna |
| Spring sedge |
Carex caryophyllea |
| Spurge-laurel |
Daphne laureola |
| Square-stalked St John's-wort |
Hypericum tetrapterum |
| Squinancywort |
Asperula cynanchica |
| Star sedge |
Carex echinata |
| Starved wood-sedge |
Carex depauperata |
| Stinking Hellebore |
Helleborus foetidus |
| Sweet vernal-grass |
Anthoxanthum odoratum |
| Toad rush |
Juncus bufonius |
| Toothwort |
Lathraea squamaria |
| Tormentil |
Potentilla erecta |
| Tufted hair-grass |
Deschampsia cespitosa |
| Upright brome |
Bromopsis erecta |
| Wall-rue |
Asplenium ruta-muraria |
| Wall lettuce |
Mycelis muralis |
| Water avens |
Geum rivale |
| Water horsetail |
Equisetum fluviatile |
| Water-plantain |
Alisma plantago-aquatica |
| Water-starwort |
Callitriche species |
| Wavy hair-grass |
Deschampsia flexuosa |
| Wayfaring-tree |
Viburnum lantana |
| Western gorse |
Ulex gallii |
| Whitebeam |
Sorbus species |
| Wild angelica |
Angelica sylvestris |
| Wild cherry |
Prunus avium |
| Wild daffodil |
Narcissus pseudonarcissus |
| Wild marjoram |
Origanum vulgare |
| Wild privet |
Ligustrum vulgare |
| Wild service-tree |
Sorbus torminalis |
| Wild thyme |
Thymus polytrichus |
| Wood anemone |
Anemone nemorosa |
| Wood sage |
Teucrium scorodonia |
| Wood sedge |
Carex sylvatica |
| Wood spurge |
Euphorbia amygdaloides |
| Wood vetch |
Vicia sylvatica |
| Woolly thistle |
Cirsium eriophorum |
| Yellow archangel |
Lamiastrum galeobdolon |
| Yellow oat-grass |
Trisetum flavescens |
| Yellow-rattle |
Rhinanthus minor |
| Yew |
Taxus baccata |
| INVERTEBRATES |
| Adonis blue |
Lysandra bellargus |
| Ash-black slug |
Limax cinereoniger |
| Banded demoiselle |
Calopteryx splendens |
| Beautiful demoiselle |
Calopteryx virgo |
| Brimstone |
Gonepteryx rhamni |
| Brown argus |
Aricia agestis |
| Cinnabar moth |
Tyria jacobaea |
| Common blue |
Polyommatus icarus |
| Dark green fritillary |
Argynnis aglaja |
| Emperor moth |
Saturnia pavonia |
| Green hairstreak |
Callophrys rubi |
| High brown fritillary |
Argynnis edippe |
| Marbled white |
Melanargia galathea |
| Purple hairstreak |
Quercusia quercus |
| Silver-studded blue |
Plebejus argus |
| Silver-washed fritillary |
Argynnis paphia |
| White-letter hairstreak |
Strymonidia w-album |
| Yellow meadow-ant |
Lasius flavus |
| REPTILES |
| Adder |
Vipera berus |
| Common lizard |
Lacerta vivipara |
| Grass snake |
Natrix natrix |
| BIRDS |
| Barn owl |
Tyto alba |
| Blackcap |
Sylvia atricapilla |
| Buzzard |
Buteo buteo |
| Chiffchaff |
Phylloscopus collybita |
| Cuckoo |
Cuculus canorus |
| Dipper |
Cinclus cinclus |
| Goldcrest |
Regulus regulus |
| Great spotted-woodpecker |
Dendrocopos major |
| Green woodpecker |
Picus viridis |
| Kingfisher |
Alcedo atthis |
| Meadow pipit |
Anthus pratensis |
| Nuthatch |
Sitta europaea |
| Peregrine falcon |
Falco peregrinus |
| Raven |
Corvus corax |
| Skylark |
Alauda arvensis |
| Sparrowhawk |
Accipiter nisus |
| Spotted flycatcher |
Muscicapa striata |
| Stonechat |
Saxicola torquata |
| Swallow |
Hirundo rustica |
| Yellowhammer |
Emberiza citrinella |
| MAMMALS |
| Badger |
Meles meles |
| Common dormouse |
Muscardinus avellanarius |
| Daubenton's bat |
Myotis daubentonii |
| Greater Horseshoe bat |
Rhinolophus ferrumequinum |
| Lesser Horseshoe bat |
Rhinolophus hipposideros |
| Muntjac |
Muntiacus reevesii |
| Roe deer |
Capreolus capreolus |
| Wood mouse |
Apodemus sylvaticus |
-Mendip