Shaugh Prior Woods

Site of Special Scientific Interest · 50.4570, -4.0590

Condition (Natural England)

Favourable (6)
UnitFeatureConditionArea (ha)Assessed
SX532637 Favourable 9.88 2015-02-11
SX533640 Favourable 9.88 2015-02-11
SX536641 Favourable 13.12 2015-02-11
SX539636 Favourable 17.59 2015-02-11
SX539639 Favourable 32.67 2015-02-11
SX546639 Favourable 14.4 2015-02-11

Geology & landscape

Rock Type: Granite

Landscape processes: Volcanic / Igneous

Birds & fish recorded

Birds

SpeciesSeason
buzzard Breeding
grey wagtail Breeding

Description

Shaugh Prior Woods SSSI Description The site is important for its ancient oak woodlands which support a rich lichen and moss flora including some rare and local species of lichen. Situated on the south-west of Dartmoor the site is subjected to a strong Atlantic climate. Within an altitude range of 250 to 800 metres, the woodlands cover the steep valley slopes around the confluence of the Rivers Meavy and Plym. The parent rocks are granite and other acid igneous types and are frequently exposed as clitter or faces. The soils are well drained and of a gritty, loamy nature with a humose surface horizon in places. The woodland canopy is dominated by pedunculate oak Quercus robur and is largely derived from former coppice. Sessile oak Q. petraea, beech Fagus sylvatica, ash Fraxinus excelsior and birch Betula spp. are present as co-dominants. Alder Alnus glutinosa occupies the banksides. The understorey is dominated by hazel Corylus avellana with holly Ilex aquifolium, rowan Sorbus aucuparia and hawthorn Crataegus monogyna being locally abundant; alder Buckthorn Frangula alnus is scattered throughout the woods. The ground flora, which is heavily grazed in places by sheep, has as its main constituents bilberry Vaccinium myrtillus, bramble Rubus fruticosus, creeping softgrass Holcus mollis and bent grasses Agrostis spp. honeysuckle Lonicera periclymenum, wood sorrel Oxalis acetosella, herb robert Geranium robertianum and heath bedstraw Galium saxatile are frequent, while patches of greater woodrush Luzula sylvatica occur along the river banks. Ferns are locally abundant, particularly on the moister, north facing slopes: typical species include male-fern Dryopteris filix-mas, broad buckler-fern Dryopteris dilatata, scaly male-fern Dryopteris affinis and hard fern Blechnum spicant. Bracken Pteridium aquilinum occurs throughout and forms dense stands along woodland edges. Tunbridge filmy-fern Hymenophyllum tunbrigense is well established, especially near the rivers. The rich lichen communities vary through the site according to the degree of exposure. Around the sheltered, lower valleys the community is characterised by lowland old forest species such as Arthonia didyma, Loxospora elatina, Pannaria conoplea, Sticta limbata, Parmelia reddenda and Thelotrema lepadinum. Locally rare species include Alectoria subcana, Porina coralloidea and Enterographa hutchinsiae. On higher ground a lichen flora occurs that is typical of exposed, upland oak woods with a high rainfall. Parmelia laevigata, P. taylorensis, Ochrolechia androgyna and Cladonia spp. are characteristically abundant, whilst Alectoria fuscescens, Sphaerophorus globosus and the rare, western Parmelia endochlora and Graphina ruiziana occur. There is a typical woodland breeding bird population, with such species as buzzard Buteo buteo, tawny owl Strix aluco, great spotted woodpecker Dendrocopos major and nuthatch Sitta europaea, whilst dipper Cinclus cinclus and grey wagtail Motacilla cinerea nest alongside the watercourses.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
dipper Cinclus cinclus NT (Breeding) bird-dipper cinclidae
buzzard Buteo buteo LC (Breeding) bird-hawk falconidae
nuthatch Sitta europaea LC (Breeding) bird-nuthatch sittidae
tawny owl Strix aluco NT (Breeding) bird-owl strigidae
grey wagtail Motacilla cinerea NT (Breeding) bird-wagtail motacillidae
great spotted woodpecker Dendrocopos major LC (Breeding) bird-woodpecker picidae
hard fern Blechnum spicant LC fern blechnaceae
scaly male-fern Dryopteris affinis LC fern dryopteridaceae
broad buckler fern Dryopteris dilatata LC fern dryopteridaceae
male fern Dryopteris filix-mas LC fern dryopteridaceae
Tunrbidge filmy-fern Hymenophyllum tunbrigense VU fern hymenophyllaceae
bracken Pteridium aquilinum LC fern dennstaedtiaceae
creeping soft grass Holcus mollis LC grass poaceae
heath bedstraw Galium saxatile LC herb rubiaceae
herb Robert Geranium robertianum LC herb geraniaceae
honeysuckle Lonicera periclymenum LC herb caprifoliaceae
wood sorrel Oxalis acetosella LC herb oxalidaceae
bramble Rubus fruticosus LC herb rosaceae
no common name Arthonia didyma LC lichen no common name
no common name Enterographa hutchinsiae LC lichen no common name
no common name Graphina ruiziana Not listed in GB list lichen no common name
Loxospora elatina LC lichen sarrameanaceae
powdery saucer lichen Ochrolechia androgyna LC lichen no common name
mealy-rimmed shingle lichen Pannaria conoplea LC lichen no common name
no common name Parmelia endochlora Not listed in GB list lichen no common name
no common name Parmelia laevigata Not listed in GB list lichen no common name
no common name Parmelia reddenda Not listed in GB list lichen no common name
no common name Porina coralloidea LC lichen no common name
coral lichen Sphaerophorus globosus LC lichen no common name
floury sticta Sticta limbata LC lichen no common name
barnacle lichen Thelotrema lepadinum LC lichen no common name
great wood rush Luzula sylvatica LC rush juncaceae
hawthorn Crataegus monogyna LC shrub rosaceae
alder buckthorn Frangula alnus LC shrub rhamnaceae
billberry Vaccinium myrtillus LC shrub ericaceae
alder Alnus glutinosa LC tree salicaceae
hazel Corylus avellana LC tree corylaceae
beech Fagus sylvatica LC tree fabiaceae
ash Fraxinus excelsior LC tree oleaceae
holly Ilex aquifolium LC tree aquifoliaceae
common oak Quercus robur LC tree fagaceae
rowan Sorbus aucuparia LC tree rosaceae

Insects to look out for

These moths, butterflies and beetles are known to feed on plants recorded at this site, and carry a notable UK conservation status — but a host-plant being present doesn't mean the insect has actually been recorded here. Treat this as "worth watching for," not a confirmed sighting.

SpeciesStatusVia host-plant
Speckled footman
Coscinia cribraria
Critically Endangered Vaccinium myrtillus
Oak lutestring
Cymatophorina diluta
Endangered Quercus robur
Figure of eight
Diloba caeruleocephala
Endangered Crataegus spp.
The lappet
Gastropacha quercifolia
Endangered Crataegus monogyna, Frangula alnus
Scarce vapourer
Orgyia recens
Endangered Alnus glutinosa, Corylus avellana, Crataegus spp., Fagus sylvatica, Frangula alnus, Quercus spp., Rubus fruticosus
Mouse moth
Amphipyra tragopoginis
Vulnerable Crataegus spp.
The sprawler
Asteroscopus sphinx
Vulnerable Corylus avellana, Crataegus spp., Fagus sylvatica, Fraxinus excelsior, Quercus spp.
Broom moth
Ceramica pisi
Vulnerable Pteridium aquilinum, Rubus fruticosus, Vaccinium myrtillus
Mottled umber
Erannis defoliaria
Vulnerable Corylus avellana, Crataegus spp., Fagus sylvatica, Lonicera periclymenum, Quercus spp., Sorbus aucuparia, Vaccinium myrtillus
Marsh fritillary
Euphydryas aurinia
Vulnerable Lonicera periclymenum
Satyr pug
Eupithecia satyrata
Vulnerable Galium spp.
Bedstraw hawk-moth
Hyles gallii
Vulnerable Galium spp.
White admiral
Limenitis camilla
Vulnerable Lonicera periclymenum
The lackey
Malacosoma neustria
Vulnerable Corylus avellana, Crataegus monogyna, Quercus spp., Rubus fruticosus
Pale brindled
Phigalia pilosaria
Vulnerable Alnus glutinosa, Corylus avellana, Crataegus monogyna, Fraxinus excelsior, Quercus spp.
Grizzled skipper
Pyrgus malvae
Vulnerable Rubus fruticosus
Early moth
Theria primaria
Vulnerable Crataegus monogyna, Quercus spp., Vaccinium myrtillus
Pale eggar
Trichiura crataegi
Vulnerable Corylus avellana, Crataegus monogyna, Quercus spp., Rubus fruticosus, Vaccinium myrtillus
Oak hook-tip
Watsonalla binaria
Vulnerable Quercus robur
Flounced chestnut
Agrochola helvola
Near Threatened Crataegus monogyna, Quercus spp., Vaccinium myrtillus
Beaded chestnut
Agrochola lychnidis
Near Threatened Crataegus monogyna, Vaccinium myrtillus
Grey chi
Antitype chi
Near Threatened Crataegus monogyna
Garden tiger
Arctia caja
Near Threatened Pteridium aquilinum, Sorbus aucuparia
Light crimson underwing
Catocala promissa
Near Threatened Quercus robur
Dark crimson underwing
Catocala sponsa
Near Threatened Quercus robur
Rosy marsh moth
Coenophila subrosea
Near Threatened Vaccinium myrtillus
Dingy mocha
Cyclophora pendularia
Near Threatened Alnus glutinosa
Heart moth
Dicycla oo
Near Threatened Quercus robur
Kentish glory
Endromis versicolora
Near Threatened Alnus glutinosa
Large thorn
Ennomos autumnaria
Near Threatened Alnus glutinosa, Corylus avellana, Crataegus spp., Quercus spp.
September thorn
Ennomos erosaria
Near Threatened Fagus sylvatica, Quercus spp.
Dusky thorn
Ennomos fuscantaria
Near Threatened Fraxinus excelsior
The Silurian
Eriopygodes imbecilla
Near Threatened Galium saxatile, Vaccinium myrtillus
Autumnal rustic
Eugnorisma glareosa
Near Threatened Galium spp.
Grey pug
Eupithecia subfuscata
Near Threatened Crataegus monogyna
Double dart
Graphiphora augur
Near Threatened Crataegus spp., Quercus spp.
Clay fan-foot
Paracolax tristalis
Near Threatened Quercus spp.
Common fan-foot
Pechipogo strigilata
Near Threatened Quercus robur
Frosted green
Polyploca ridens
Near Threatened Quercus robur
Dark-barred twin-spot carpet
Xanthorhoe ferrugata
Near Threatened Galium spp.
Scotch burnet
Zygaena exulans
Near Threatened Vaccinium myrtillus

Host-plant data: Cook et al. (2025), Traits data for the butterflies and macro-moths of Great Britain and Ireland, 2024, UK Centre for Ecology & Hydrology / Butterfly Conservation; and Padovani et al. (2020), Database of Insects and their Food Plants (DBIF), UK Centre for Ecology & Hydrology (both Open Government Licence). Contains data supplied by UK Centre for Ecology & Hydrology.

Plant communities

W25 — Bracken scrub

Pteridium aquilinum-Rubus fruticosus underscrub

Matches 11 species from the description above: Crataegus monogyna, Dryopteris dilatata, Dryopteris filix-mas, Fagus sylvatica, Fraxinus excelsior, Galium saxatile, Geranium robertianum, Holcus mollis, Lonicera periclymenum, Pteridium aquilinum, Quercus robur

Hedera helix, Acer pseudoplatanus, Fagus sylvatica, Quercus robur, Fraxinus excelsior, Sambucus nigra, Ulex europaeus, Crataegus monogyna, Prunus spinosa, Luzula multiflora, Mnium hornum, Brachythecium rutabulum, Kindbergia praelonga, Angelica sylvestris, Conopodium majus, Heracleum sphondylium, Arum maculatum, Cirsium arvense, Lonicera periclymenum, Silene dioica, Stellaria holostea, Mercurialis perennis, Geranium robertianum, Glechoma hederacea, Teucrium scorodonia, Hyacinthoides non-scripta, Chamerion angustifolium, Circaea lutetiana, Digitalis purpurea, Rumex acetosa, Anemone nemorosa, Ficaria verna, Potentilla erecta, Rosa arvensis, Rosa canina, Rubus fruticosus agg., Rubus idaeus, Galium aparine, Galium mollugo sens.lat., Galium saxatile, Urtica dioica, Viola riviniana, Agrostis capillaris, Anthoxanthum odoratum, Arrhenatherum elatius, Dactylis glomerata, Festuca rubra, Holcus lanatus, Holcus mollis, Poa trivialis, Pteridium aquilinum, Dryopteris dilatata, Dryopteris filix-mas

A14 — Fast flowing river and stream

Myriophyllum alterniflorum community

Isolepis fluitans, Juncus bulbosus, Fontinalis antipyretica, Lobelia dortmanna, Equisetum fluviatile, Myriophyllum alterniflorum, Lemna minor, Callitriche stagnalis, Littorella uniflora, Potamogeton filiformis, Potamogeton gramineus, Potamogeton natans, Ranunculus peltatus, Chara spp., Nitella hyalina

A17 — Chalk river and stream, Fast flowing river and stream

Ranunculus penicillatus ssp. pseudofluitans community

Berula erecta, Nasturtium officinale, Elodea canadensis, Lemna minor, Callitriche stagnalis, Veronica beccabunga, Polygonum amphibium, Polygonum hydropiper, Potamogeton crispus, Potamogeton pectinatus, Ranunculus penicillatus ssp. pseudofluitans

A18 — Fast flowing river and stream

Ranunculus fluitans community

Fontinalis antipyretica, Fontinalis squamosa var. curnowii, Myriophyllum alterniflorum, Myriophyllum spicatum, Elodea canadensis, Mentha aquatica, Lemna gibba, Lemna minor, Potamogeton perfoliatus, Ranunculus fluitans, Glyceria fluitans, Phalaris arundinacea

A9 — Fast flowing river and stream, Marginal and inundation, Pond ditch and canal, Sluggish river and stream

Potamogeton natans community

Schoenoplectus lacustris, Juncus bulbosus, Sparganium angustifolium, Sparganium erectum, Sparganium minimum, Alisma plantago-aquatica, Lobelia dortmanna, Equisetum fluviatile, Myriophyllum alterniflorum, Elodea canadensis, Lemna minor, Lemna trisulca, Nymphaea alba, Callitriche platycarpa, Callitriche stagnalis, Littorella uniflora, Potamogeton natans, Ranunculus trichophyllus, Glyceria fluitans, Chara subspinosa