Billacombe

Site of Special Scientific Interest · 50.3670, -4.0848

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Devon County

Condition (Natural England)

Favourable (1)
UnitFeatureConditionArea (ha)Assessed
SX518539 Favourable 1.95 2011-08-03

Geology & landscape

Geological Period: Devonian · Rock Type: Limestone

Description

Billacombe SSSI Description This site supports a population of the nationally rare field eryngo Eryngium campestre, a plant that is specially protected under the provisions of the Wildlife and Countryside Act 1981. The locality consists of a gently sloping field with a southerly aspect and the soils, which overlie Devonian limestone, are generally thin and well drained. A species-rich sward of neutral grassland occupies much of the site. Among the most abundant grass species are yellow oat grass Trisetum flavescens, bents Agrostis spp. and red fescue Festuca rubra with occasional cock’s-foot Dactylis glomerata and false oat grass Arrhenatherum elatius. Many broad-leaved herbs occur with frequent common knapweed Centaurea nigra, burnet saxifrage Pimpinella saxifraga, field scabious Knautia arvensis, yarrow Achillea millefolium, ribwort plantain Plantago lanceolata, red clover Trifolium pratense and local patches of lady’s bedstraw Galium verum and common rest-harrow Ononis repens. Of occasional distribution are wild carrot Daucus carota, oxeye daisy Leucanthemum vulgare, bulbous buttercup Ranunculus bulbosus and field bindweed Convolvulus arvensis.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
false oat grass Arrhenatherum elatius LC grass poaceae
cock's foot Dactylis glomerata LC grass poaceae
red fescue Festuca rubra LC grass poaceae
yellow oat grass Trisetum flavescens LC grass poaceae
yarrow Achillea millefolium LC herb asteraceae
black knapweed Centaurea nigra LC herb asteraceae
field bindweed Convolvulus arvensis LC herb convolvulaceae
wild carrot Daucus carota LC herb apiaceae
field eryngo Eryngium campestre LC herb asteraceae
lady's bedstraw Galium verum LC herb rubiaceae
field scabious Knautia arvensis LC herb caprifoliaceae
oxeye daisy Leucanthemum vulgare LC herb asteraceae
common rest-harrow Ononis repens VU herb fabaceae
burnet saxifrage Pimpinella saxifraga NT herb apiaceae
ribwort plantain Plantago lanceolata LC herb plantaginaceae
bulbous buttercup Ranunculus bulbosus LC herb ranunculaceae
red clover Trifolium pratense LC herb fabaceae

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
Black-veined moth
Siona lineata
Critically Endangered Centaurea nigra
Straw belle
Aspitates gilvaria
Endangered Achillea millefolium
Marsh moth
Athetis pallustris
Endangered Plantago lanceolata
Heath fritillary
Melitaea athalia
Endangered Achillea millefolium, Plantago lanceolata
Glanville fritillary
Melitaea cinxia
Endangered Plantago lanceolata
Sussex emerald
Thalera fimbrialis
Endangered Daucus carota
Marsh fritillary
Euphydryas aurinia
Vulnerable Knautia arvensis, Plantago spp.
Satyr pug
Eupithecia satyrata
Vulnerable Centaurea spp., Galium spp.
Garden dart
Euxoa nigricans
Vulnerable Plantago spp., Trifolium spp.
White-line dart
Euxoa tritici
Vulnerable Galium verum
Grayling
Hipparchia semele
Vulnerable Festuca rubra
Bedstraw hawk-moth
Hyles gallii
Vulnerable Galium spp.
Silver studded blue
Plebejus argus
Vulnerable Ononis spp.
Beaded chestnut
Agrochola lychnidis
Near Threatened Ranunculus spp., Trifolium spp.
Grey chi
Antitype chi
Near Threatened Plantago lanceolata
Large nutmeg
Apamea anceps
Near Threatened Dactylis glomerata
Rest harrow
Aplasta ononaria
Near Threatened Ononis repens
Garden tiger
Arctia caja
Near Threatened Plantago spp.
Latticed heath
Chiasmia clathrata
Near Threatened Trifolium spp.
No common name
Chrysolina marginata
Near Threatened Achillea millefolium
Small heath
Coenonympha pamphilus
Near Threatened Festuca spp.
Autumnal rustic
Eugnorisma glareosa
Near Threatened Galium spp., Plantago spp.
Tawny speckled
Eupithecia icterata
Near Threatened Achillea millefolium
Grey pug
Eupithecia subfuscata
Near Threatened Achillea millefolium, Centaurea spp., Pimpinella saxifraga
Bordered pug
Eupithecia succenturiata
Near Threatened Achillea millefolium
White-spotted pug
Eupithecia tripunctaria
Near Threatened Daucus carota
Scarce forester
Jordanita globulariae
Near Threatened Centaurea nigra
Wall
Lasiommata megera
Near Threatened Dactylis glomerata
Rosy minor
Litoligia literosa
Near Threatened Arrhenatherum elatius, Dactylis glomerata
Swallowtail papilio
Papilio machaon
Near Threatened Daucus carota, Pimpinella saxifraga
The four-spotted
Tyta luctuosa
Near Threatened Convolvulus arvensis
Dark-barred twin-spot carpet
Xanthorhoe ferrugata
Near Threatened Galium spp.

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.