Calstone and Cherhill Downs () is a 128.6

hectare The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100- metre sides (1 hm2), or 10,000 m2, and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. An acre is ...

biological Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of ...

Wiltshire Wiltshire (; abbreviated Wilts) is a historic and ceremonial county in South West England with an area of . It is landlocked and borders the counties of Dorset to the southwest, Somerset to the west, Hampshire to the southeast, Gloucestershire ...

, notified in 1971, including

downland Downland, chalkland, chalk downs or just downs are areas of open chalk hills, such as the North Downs. This term is used to describe the characteristic landscape in southern England where chalk is exposed at the surface. The name "downs" is deriv ...

at Calstone Wellington and

Cherhill Cherhill is a village and civil parish in Wiltshire, England. The village is about east of the town of Calne, on the A4 road towards Marlborough. The parish includes the village of Yatesbury. Overview Cherhill has a population of around 7 ...

. It provides one of the best examples in Wiltshire of unimproved downland. The site forms part of the North Wessex Downs Area of Outstanding Natural Beauty. The site lies towards the western edge of the

Marlborough Downs The North Wessex Downs Area of Outstanding Natural Beauty (AONB) is located in the English counties of Berkshire, Hampshire, Oxfordshire and Wiltshire. The name ''North Wessex Downs'' is not a traditional one, the area covered being better k ...

, has a narrow plateau of the Middle and Upper Chalk and descends steeply to the north and more gently to the south. The south-facing slope has a complex structure of narrow, steep-sided dry valleys and coombes and has a mixture of grasses, sedges and

forb A forb or phorb is an herbaceous flowering plant that is not a graminoid (grass, sedge, or rush). The term is used in biology and in vegetation ecology, especially in relation to grasslands and understory. Typically these are dicots without woo ...

s. Here grow a typical calcareous community including glaucus sedge, sheep’s-fescue, meadow oat-grass, heath-grass and common quaking-grass, together with cowslip,

salad burnet ''Sanguisorba minor'', the salad burnet, garden burnet, small burnet, burnet (also used for ''Sanguisorba'' generally), pimpernelle, Toper's plant, and burnet-bloodwort, is an edible perennial herbaceous plant in the family Rosaceae. It has ...

, rock-rose, betony, field fleawort,

bastard-toadflax Bastard toadflax or bastard-toadflax is a common name for a plant which may refer to: *'' Comandra'' *''Thesium humifusum ''Thesium humifusum'' is a species of hemiparasitic flowering plant in the family Santalaceae found in western Europe and n ...

, round-headed rampion,

small scabious ''Scabiosa columbaria'', called the small scabious or dwarf pincushion flower, is a widespread species of flowering plant in the genus '' Scabiosa'', native to Europe, Africa, and western Asia, from Sweden to Angola. In the garden it is a short-l ...

, devil’s-bit scabious,

horseshoe vetch ''Hippocrepis comosa'', the horseshoe vetch, is a species of perennial flowering plant belonging to the genus ''Hippocrepis'' in the family Fabaceae. Description The overall appearance depends on its habitat: sometimes it forms upright clumps ...

kidney vetch ''Anthyllis vulneraria'', the common kidneyvetch, kidney vetch or woundwort is a medicinal plant native to Europe. The name ''vulneraria'' means "wound healer". Description ''Anthyllis vulneraria'' reaches of height. The stem is simple or more ...

and

chalk milkwort ''Polygala calcarea'', the chalk milkwort, is a species of flowering plant in the family Polygalaceae, native to western Europe. It is a delicate mat-forming evergreen perennial growing to tall by broad, with spikes of small, vivid deep blue fl ...

. Orchids found here include,

early purple orchid ''Orchis mascula'', the early-purple orchid, early spring orchis, is a species of flowering plant in the orchid family, Orchidaceae. Description ''Orchis mascula'' is a perennial herbaceous plant with stems up to high, green at the base and ...

, burnt orchid,

fragrant orchid ''Gymnadenia conopsea'', commonly known as the fragrant orchid or chalk fragrant orchid, is a herbaceous plant of the family Orchidaceae native to northern Europe. Etymology The name of the genus ''Gymnadenia'' is formed from Greek words (', ...

, bee orchid and

frog orchid ''Coeloglossum'' is a genus of flowering plants in the orchid family Orchidaceae. It has long been considered to have only one species, ''Coeloglossum viride'', the frog orchid. Some recent classifications regard ''Coeloglossum'' as part of the ...

, the last three all being common here. The site is also excellent for invertebrates, hosting the

small blue The small blue (''Cupido minimus'') is a Palearctic butterfly in the family Lycaenidae. Despite its common name, it is not particularly blue. The male has some bluish suffusion at the base of its upper wings but is mostly dark brown like the fem ...

chalkhill blue The chalkhill blue (''Lysandra coridon'') is a butterfly in the family Lycaenidae. It is a small butterfly that can be found throughout the Palearctic realm, where it occurs primarily in grasslands rich in chalk. Males have a pale blue colour, wh ...

Duke of Burgundy Duke of Burgundy (french: duc de Bourgogne) was a title used by the rulers of the Duchy of Burgundy, from its establishment in 843 to its annexation by France in 1477, and later by Holy Roman Emperors and Kings of Spain from the House of Habsburg ...

and

marsh fritillary The marsh fritillary (''Euphydryas aurinia'') is a butterfly of the family Nymphalidae. Commonly distributed in the Palearctic region, the marsh fritillary's common name derives from one of its several habitats, marshland. The prolonged larval s ...

, as well as the rare wart-biter bush cricket and the uncommon bug '' Sehirus dubius'' The lime-loving heath snail '' Helicella itala'' is also found here. There is a dewpond that holds water all year round; newts are found here as well as the Emperor dragonfly and the azure damselfly '' Coenagrion puella''.

References

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