52°20′N 0°0′W / 52.333°N -0.000°E / 52.333; -0.000

Ouse Washes at Welney

Cambridgeshire is a county in eastern England, with an area of 339,746 hectares (1,312 sq mi)[1] and a population as of mid-2015 of 841,218.[2] It is crossed by the Nene and the Great Ouse rivers. The University of Cambridge, which was founded in the thirteenth century, made the county one of the country's most important intellectual centres. A large part of the county is in The Fens, and drainage of this habitat, which probably commenced in the Roman period and was largely completed by the seventeenth century, considerably increased the area available for agriculture.[3]

The administrative county was formed in 1974, incorporating most of the historic county of Huntingdonshire.[3] Local government is divided between Cambridgeshire County Council and Peterborough City Council, which is a separate unitary authority. Under the county council, there are five district councils, Cambridge City Council, South Cambridgeshire District Council, East Cambridgeshire District Council, Huntingdonshire District Council and Fenland District Council.[4]

In England, Sites of Special Scientific Interest (SSSIs) are designated by Natural England, which is responsible for protecting England's natural environment. Designation as an SSSI gives legal protection to the most important wildlife and geological sites.[5] As of March 2017, there are 99 sites designated in the county.[6] There are eighty-eight sites listed for their biological interest, ten for their geological interest, and one for both interests.

The largest site is Ouse Washes at 2,513.6 hectares (6,211 acres), which is partly in Norfolk. It is internationally important for its wintering and breeding waterfowl and waders, such as teal, pintail and wigeon.[7] The smallest is Delph Bridge Drain at 0.1 hectares (0.25 acres), a short stretch of ditch which was designated because it was found to have a population of fen ragwort, which was believed to have been extinct in Britain since 1857.[8] The only site designated for both biological and geological interests is Ely Pits and Meadows, which has nationally important numbers of bitterns, and has yielded sauropod dinosaurs and pliosaur marine reptiles dating to the Jurassic period.[9]

Key

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Sites

Site name Photograph B G Area Public
access 		Location Other
classifications 		Map[a] Citation[b] Description
Adventurers' Land Adventurers' Land Green tickY 10.1 hectares (25 acres)[10] YES March
52°35′53″N 0°00′29″E / 52.598°N 0.008°E / 52.598; 0.008 (Adventurers' Land)
TF361019[10] 		GCR[11] Map Citation The site is described by Natural England as important for the study of changes in Holocene sea levels. There are five peat levels dating to between 6,400 and 1,850 years BP, and the earliest level represents the oldest directly dated transgression of the sea into the Fens.[12]
Alder Carr Alder Carr Green tickY 6.7 hectares (17 acres)[13] NO Hildersham
52°07′01″N 0°15′04″E / 52.117°N 0.251°E / 52.117; 0.251 (Alder Carr)
TL542489[13] 		Map Citation The site is a wet valley which has alder on fen peat, a type of woodland which is now rare in East Anglia. Ground flora include angelica and meadowsweet. This habitat is very valuable to invertebrates.[14]
Aversley Wood Aversley Wood Green tickY 62.3 hectares (154 acres)[15] YES Sawtry
52°25′23″N 0°17′38″W / 52.423°N 0.294°W / 52.423; -0.294 (Aversley Wood)
TL161819[15] 		WT[16] Map Citation This wood is ash and maple on heavy clay soils, with much of it dating to before the Middle Ages, and having diverse flora and fauna as a result. One area, which was probably cultivated until around 1350, has medieval ridge and furrow and lacks some plants found in areas which have been more continuously forested.[17]
Balsham Wood Balsham Wood Green tickY 35.0 hectares (86 acres)[18] NO Balsham
52°07′19″N 0°19′05″E / 52.122°N 0.318°E / 52.122; 0.318 (Balsham Wood)
TL588496[18] 		Map Citation This site has one of the last surviving areas of ash and maple woodland on chalky boulder clay. It has diverse flora, including the rare oxlip and a variety of shrubs, such as dogwood. Open grassy rides provide additional habitats.[19]
Barnack Hills & Holes Barnack Hills & Holes Green tickY 23.5 hectares (58 acres)[20] YES Barnack
52°37′44″N 0°24′43″W / 52.629°N 0.412°W / 52.629; -0.412 (Barnack Hills & Holes)
TF076046[20] 		NCR,[21] NNR,[22] SAC[23] Map Citation This site, on a former mineral working, is grassland on Jurassic limestone, and it is managed by sheep grazing and scrub control. It has a diverse flora including some species which are nationally scarce, such as pasque flowers.[24]
Barrington Chalk Pit Barrington Chalk Pit Green tickY 97.1 hectares (240 acres)[25] FP Barrington
52°08′31″N 0°01′59″E / 52.142°N 0.033°E / 52.142; 0.033 (Barrington Chalk Pit)
TL392512[25] 		GCR[26] Map Citation This large quarry is the only surviving exposure of the Cretaceous Cambridge Greensand. Fossils include brachiopods and fish teeth. It is overlain by thick sequences of chalk and Totternhoe Stone.[27]
Barrington Pit Barrington Pit Green tickY 3.8 hectares (9.4 acres)[28] NO Barrington
52°07′23″N 0°01′08″E / 52.123°N 0.019°E / 52.123; 0.019 (Barrington Pit)
TL383491[28] 		GCR[29] Map Citation This site is described by Natural England as of national importance for its mammal fossils. Species include hippopotamuses, straight-tusked elephants, lions and aurochs. They probably date to the warm Eemian period, around 130,000 to 115,000 years ago.[30]
Bassenhally Pit Bassenhally Pit Green tickY 8.6 hectares (21 acres)[31] NO Whittlesey
52°34′08″N 0°06′14″W / 52.569°N 0.104°W / 52.569; -0.104 (Bassenhally Pit)
TL286985[31] 		Map Citation This former gravel quarry has diverse habitats, such as a pond, marshes, grassland, scrub and woodland. The marsh, where there are locally unusual vascular plants, is a nationally scarce habitat; flora include jointed rush, creeping bent, lesser water-plantain, early marsh-orchid and water violet.[32]
Bedford Purlieus Bedford Purlieus Green tickY 214.3 hectares (530 acres)[33] YES Wansford
52°34′59″N 0°27′54″W / 52.583°N 0.465°W / 52.583; -0.465 (Bedford Purlieus)
TL041995[33] 		NCR,[34] NNR[22] Map Citation This is ancient woodland with a variety of habitats of oak and ash coppices. It also has diverse flora including ramsons, lily-of-the-valleys, columbines, herb-paris and fly orchids.[35]
Berry Fen Berry Fen Green tickY 15.3 hectares (38 acres)[36] NO Earith
52°21′04″N 0°01′19″E / 52.351°N 0.022°E / 52.351; 0.022 (Berry Fen)
TL378745[36] 		Map Citation Archived 24 October 2012 at the Wayback Machine This neutral grassland periodically floods in the winter. It is used by wintering wildfowl, including Bewick's swans in nationally numbers, especially when the nearby Ouse Washes flood too deeply. There are wetland herbs such as marsh ragwort and the rare narrow-leaved water-dropwort.[37]
Bonemills Hollow :Bonemills Hollow Green tickY 17.5 hectares (43 acres)[38] NO Wittering
52°35′56″N 0°28′23″W / 52.599°N 0.473°W / 52.599; -0.473 (Bonemills Hollow)
TF035012[38] 		Map Citation The valley has marsh and Jurassic calcareous grassland areas. The marshland is on the valley floor, and dominant species are lesser pond-sedge and the rushes jointed rush and hard rush.[39]
Brackland Rough Brackland Rough Green tickY 10.7 hectares (26 acres)[40] YES Fordham
52°18′07″N 0°23′38″E / 52.302°N 0.394°E / 52.302; 0.394 (Brackland Rough)
TL633698[40] 		WTBCN[41] Map Citation This wet woodland site has semi-natural alder coppice, with ash, crack willow and silver birch. The ground flora has tall fens, together with herbs such as marsh marigold and yellow flag.[42]
Brampton Meadow Brampton Meadow Green tickY 1.0 hectare (2.5 acres)[43] NO Brampton
52°19′59″N 0°15′07″W / 52.333°N 0.252°W / 52.333; -0.252 (Brampton Meadow)
TL192720[43] 		Map Citation The site has a rich variety of plant species on calcareous clay pasture, a declining habitat. Plants include quaking-grass, adder's tongue fern, cowslip and green-winged orchid.[44]
Brampton Racecourse Brampton Racecourse Green tickY 21.1 hectares (52 acres)[45] NO Brampton
52°20′06″N 0°14′10″W / 52.335°N 0.236°W / 52.335; -0.236 (Brampton Racecourse)
TL203722[45] 		Map Citation The site is species-rich neutral grassland, a rare habitat in the county, in the flood plain of Alconbury Brook. Plants include salad burnet, pepper-saxifrage, and the largest population of green-winged orchid in Cambridgeshire.[46]
Brampton Wood Brampton Wood Green tickY 132.1 hectares (326 acres)[47] YES Brampton
52°18′58″N 0°16′12″W / 52.316°N 0.27°W / 52.316; -0.27 (Brampton Wood)
TL179701[47] 		WTBCN[48] Map Citation This is one of the few surviving areas of ancient woodland in the county. It is wet ash and maple on heavy clay soil, with rides which have a varied grassland flora, such as yellow pimpernel, greater bird's-foot-trefoil and devil's-bit scabious.[49]
Buff Wood Buff Wood Green tickY 15.8 hectares (39 acres)[50] WTPR Hatley
52°08′10″N 0°07′41″W / 52.136°N 0.128°W / 52.136; -0.128 (Buff Wood)
TL282503[50] 		WTBCN[51] Map Citation This site is ecologically diverse boulder clay woodland, with a range of wildflowers, including oxlips and the uncommon green hellebore. There are butterflies such as brimstones, large whites, orange-tips and speckled woods.[51]
Caldecote Meadows Caldecote Meadows Green tickY 9.1 hectares (22 acres)[52] NO Caldecote
52°12′04″N 0°01′44″W / 52.201°N 0.029°W / 52.201; -0.029 (Caldecote Meadows)
TL348577[52] 		Map Citation The site is herb-rich calcareous grassland, which was formerly common in the county, but is now rare. It is traditionally managed by hay cutting and grazing, and plants include salad burnet and dropwort.[53]
Cam Washes Cam Washes Green tickY 166.5 hectares (411 acres)[54] YES Wicken
52°19′01″N 0°15′07″E / 52.317°N 0.252°E / 52.317; 0.252 (Cam Washes)
TL536712[54] 		Map Citation This site on the banks of the River Cam is composed of pastures which are seasonally flooded. It is described by Natural England as an important site for wintering and breeding wildfowl and waders. Breeding birds include snipe, redshank, gadwall, teal and shovelers.[55]
Carlton Wood Carlton Wood Green tickY 10.5 hectares (26 acres)[56] NO Great Bradley
52°09′00″N 0°24′58″E / 52.15°N 0.416°E / 52.15; 0.416 (Carlton Wood)
TL654529[56] 		Map Citation Archived 10 May 2012 at the Wayback Machine According to Natural England, this wood has one of the finest stands of hornbeam in the county. Other trees are ash, field maple, hazel and pedunculate oak. There is a variety of flora typical of ancient woodlands such as oxlips and early-purple orchids.[57]
Castor Flood Meadows Castor Flood Meadows Green tickY 41.8 hectares (103 acres)[58] YES Peterborough
52°33′43″N 0°20′42″W / 52.562°N 0.345°W / 52.562; -0.345 (Castor Flood Meadows)
TL123972[58] 		Map Citation This site on the banks of the River Nene is a remnant of formerly extensive flood meadows. Flora include slender tufted-sedges, early marsh-orchids and the nationally restricted narrow-leaved water-dropwort.[59]
Castor Hanglands Castor Hanglands Green tickY 89.8 hectares (222 acres)[60] YES Peterborough
52°36′04″N 0°21′07″W / 52.601°N 0.352°W / 52.601; -0.352 (Castor Hanglands)
TF117016[60] 		NCR,[61] NNR[22] Map Citation This site has ancient ash and maple woodland, unimproved grassland and scrub. The site is described by Natural England as valuable for invertebrates, including some nationally uncommon species. There are also ponds and ditches which have a variety of aquatic fauna including the warty newt.[62]
Cherry Hinton Pit Cherry Hinton Pit Green tickY 12.8 hectares (32 acres)[63] YES Cambridge
52°10′48″N 0°10′05″E / 52.18°N 0.168°E / 52.18; 0.168 (Cherry Hinton Pit)
TL483557[63] 		LNR,[64] WTBCN[65] Map Citation These former chalk quarries have a variety of habitats, including grassland and woodland. The site was designated an SSSI because it has four rare plants, three of which are listed in the British Red List of Threatened Species. These are great pignut, moon carrot and grape hyacinth.[66]
Chettisham Meadow Chettisham Meadow Green tickY 0.7 hectares (1.7 acres)[67] YES Chettisham
52°25′23″N 0°15′54″E / 52.423°N 0.265°E / 52.423; 0.265 (Chettisham Meadow)
TL541830[67] 		WTBCN[68] Map Citation Archived 24 October 2012 at the Wayback Machine The site is grassland on calcareous clay, and evidence survives of ridge and furrow medieval farming. Flowering plants include adder's tongue, cowslip and the uncommon green-winged orchid.[69]
Chippenham Fen and Snailwell Poor's Fen Chippenham Fen Green tickY 155.6 hectares (384 acres)[70] NO Fordham
52°17′53″N 0°24′54″E / 52.298°N 0.415°E / 52.298; 0.415 (Chippenham Fen and Snailwell Poor's Fen)
TL648694[70] 		NCR,[71] NNR,[22] Ramsar,[72] SAC[73][74] Map Citation Archived 24 October 2012 at the Wayback Machine The site is described by Natural England as "of national importance for its wide range of wetland habitats and associated birds and insects". It has diverse habitats and flora, with several uncommon species in damp meadows. It also has many species of breeding birds, and rare spiders and moths.[75]
Delph Bridge Drain Delph Bridge Drain Green tickY 0.1 hectares (0.25 acres)[76] YES Soham
52°22′01″N 0°18′00″E / 52.367°N 0.3°E / 52.367; 0.3 (Delph Bridge Drain)
TL567768[76] 		Map Citation This site has the only known British population of fen ragwort, which was previously believed to have become extinct in the UK in 1857, due to habitat destruction. It was re-discovered in 1971 when dormant seeds probably germinated following excavation of the drain.[8]
Dernford Fen Dernford Fen Green tickY 10.3 hectares (25 acres)[77] NO Sawston
52°07′52″N 0°08′56″E / 52.131°N 0.149°E / 52.131; 0.149 (Dernford Fen)
TL472503[77] 		Map Citation The site is a rare surviving example of rough fen and carr. Other habitats are dry grassland and scrub, together with ditches and a chalk stream. The diverse habitats are valuable for amphibians and reptiles.[78]
Devil's Dyke Devil's Dyke Green tickY 39.8 hectares (98 acres)[79] YES Newmarket
52°13′55″N 0°21′32″E / 52.232°N 0.359°E / 52.232; 0.359 (Devil's Dyke)
TL612619[79] 		SAC,[80] SM[81][82] Map Citation It is not known when the dyke was built but a date in the Anglo-Saxon period is thought most likely.[81] There is extensive chalk grassland with diverse species, and areas of woodland and chalk scrub. The site has unusual plants such as purple milk-vetch, bastard toadflax and pasque flowers.[83]
Dogsthorpe Star Pit Dogsthorpe Star Pit Green tickY 36.4 hectares (90 acres)[84] YES Peterborough
52°36′29″N 0°12′43″W / 52.608°N 0.212°W / 52.608; -0.212 (Dogsthorpe Star Pit)
TF212026[84] 		LNR,[85] WTBCN[86] Map Citation This former brick pit has been designated an SSSI mainly for its invertebrates, especially its water beetles, with 64 species, including four on the British Red List of Threatened Species, Graptodytes bilineatus, Dryops similaris, Gyrinus distinctus and Myopites inulaedyssentericae.[87]
Elsworth Wood Elsworth Wood Green tickY 6.9 hectares (17 acres)[88] NO Elsworth
52°14′20″N 0°04′48″W / 52.239°N 0.080°W / 52.239; -0.080 (Elsworth Wood)
TL312618[88] 		Map Citation Archived 24 October 2012 at the Wayback Machine This site has three different uncommon types of woodland. The dominant tree is coppiced field maple, with a varied shrub layer and a considerable population of oxlips. There are several nationally uncommon beetles, such as the rove beetle Stichoglossa semirufa.[89]
Ely Pits and Meadows Ely Pits Green tickY Green tickY 85.8 hectares (212 acres)[90] PP Ely
52°24′11″N 0°16′59″E / 52.403°N 0.283°E / 52.403; 0.283 (Ely Pits and Meadows)
TL554808[90] 		GCR,[91] WTBCN[92] Map Citation This site has yielded an extensive assemblage of fossil reptiles dating to the Kimmeridgian, around 155 million years ago in the late Jurassic. Its biological interest lies mainly in its breeding birds, especially nationally rare wintering and breeding bitterns.[9]
Eversden and Wimpole Woods Eversden Wood Green tickY 66.6 hectares (165 acres)[93] YES Great Eversden
52°09′36″N 0°02′06″W / 52.16°N 0.035°W / 52.16; -0.035 (Eversden and Wimpole Woods)
TL345531[93] 		SAC[94] Map Citation Archived 24 October 2012 at the Wayback Machine Wimpole Wood has six bat species, including the barbastelle, which is a very rare species in Britain; females give birth and raise young in tree crevices. Eversden Wood is a species rich example of a type of woodland rare in lowland Britain, with ancient ash and field maple trees.[95]
Eye Gravel Pit Eye Gravel Pit Green tickY 0.3 hectares (0.74 acres)[96] NO Eye Green
52°36′58″N 0°11′06″W / 52.616°N 0.185°W / 52.616; -0.185 (Eye Gravel Pit)
TF230036[96] 		GCR[97] Map Citation This former gravel quarry has marine and a few non-marine shells laid down when the area was under the North Sea, probably during the warm Eemian period, 130,000 to 115,000 years ago.[98]
Fleam Dyke Fleam Dyke Green tickY 11.8 hectares (29 acres)[99] YES Fulbourn
52°09′36″N 0°15′58″E / 52.16°N 0.266°E / 52.16; 0.266 (Fleam Dyke)
TL551539[99] 		SM[100] Map Citation Fleam Dyke is one of 286 sites selected by Charles Rothschild between 1912 and 1915 as wildlife sites "worthy of preservation" in Britain and Ireland.[101][102] The steep banks of the earthwork have species-rich chalk grassland, a rare habitat in the county.[103]
Fowlmere Watercress Beds Fowlmere Green tickY 39.9 hectares (99 acres)[104] YES Melbourn
52°05′20″N 0°02′56″E / 52.089°N 0.049°E / 52.089; 0.049 (Fowlmere Watercress Beds)
TL405454[104] 		RSPB[105] Map Citation A chalk stream runs through this nature reserve, and it has pools fed by chalk springs. Birds include kingfishers, water rails, corn buntings, sedge warblers, grasshopper warblers and starlings.[106]
Fulbourn Fen Fulbourn Fen Green tickY 27.3 hectares (67 acres)[107] YES Fulbourn
52°10′52″N 0°14′10″E / 52.181°N 0.236°E / 52.181; 0.236 (Fulbourn Fen)
TL530560[107] 		WTBCN[108] Map Citation These are ancient meadows on calcareous loam and peat which have never been farmed, so they have a rich diversity of flora and fauna. Herbs in drier areas include cowslip and salad burnet, while wetter areas have tall fen vegetation.[108][109]
Furze Hill Furze Hill Green tickY 5.8 hectares (14 acres)[110] NO Hildersham
52°06′50″N 0°16′01″E / 52.114°N 0.267°E / 52.114; 0.267 (Furze Hill)
TL553486[110] 		Map Citation Archived 24 October 2012 at the Wayback Machine The site has steep banks of glacial deep sandy gravel, and is one of the few examples of a sandy habitat in the county. There are several rare plants, such as hoary cinquefoils, pasque flowers and maiden pinks.[111]
Gamlingay Wood Gamlingay Wood Green tickY 48.4 hectares (120 acres)[112] YES Gamlingay
52°09′54″N 0°11′10″W / 52.165°N 0.186°W / 52.165; -0.186 (Gamlingay Wood)
TL242534[112] 		WTBCN[113] Map Citation This is ancient ash/maple woodland on sandy loam soil, an unusual habitat in lowland England. Ground flora include dog's mercury, yellow archangel, wood anemone and the nationally restricted oxlip.[114] The flora is diverse due to the varied soils, and there are hundreds of species of mushrooms and toadstools.[115]
Godmanchester Eastside Common Godmanchester Eastside Common Green tickY 29.7 hectares (73 acres)[116] YES Godmanchester
52°19′30″N 0°08′20″W / 52.325°N 0.139°W / 52.325; -0.139 (Godmanchester Eastside Common)
TL269713[116] 		Map Citation There are two fields, with a disused railway line separating them. The habitats are calcareous loam and calcareous clay, both of which are unusual. The southern field has lines of medieval ridge and furrow.[117]
Gog Magog Golf Course Gog Magog Golf Course Green tickY 88.1 hectares (218 acres)[118] NO Fulbourn
52°09′54″N 0°10′26″E / 52.165°N 0.174°E / 52.165; 0.174 (Gog Magog Golf Course)
TL488541[118] 		Map Citation The course is calcareous grassland which has a rich variety of flora. The main grasses are upright brome, red fescue and false oat-grass, and there are herbs such as the nationally rare moon carrot and the locally rare perennial flax.[119]
Grafham Water Grafham Water Green tickY 806.3 hectares (1,992 acres)[120] YES Grafham
52°17′49″N 0°19′08″W / 52.297°N 0.319°W / 52.297; -0.319 (Grafham Water)
TL147679[120] 		WTBCN[121] Map Citation Archived 24 October 2012 at the Wayback Machine This reservoir has nationally important numbers of wintering great crested grebes, tufted ducks and coots, and of moulting mute swans in late summer. A pond has a population of the nationally uncommon warty newt.[122]
Great Stukeley Railway Cutting Great Stukeley Railway Cutting Green tickY 34.7 hectares (86 acres)[123] NO Huntingdon
52°21′29″N 0°11′17″W / 52.358°N 0.188°W / 52.358; -0.188 (Great Stukeley Railway Cutting)
TL235748[123] 		Map Citation The site is calcareous clay grassland which has plants which were formerly common on the Huntingdonshire claylands, but are now scarce due to agricultural use. Rabbit grazing and occasional burning maintain the habitat.[124]
Great Wilbraham Common Great Wilbraham Common Green tickY 23.5 hectares (58 acres)[125] YES Great Wilbraham
52°11′42″N 0°14′35″E / 52.195°N 0.243°E / 52.195; 0.243 (Great Wilbraham Common)
TL534576[125] 		Map Citation Archived 24 October 2012 at the Wayback Machine This is one of the largest remaining areas of species-rich grassland in the county. Locally uncommon flora include purple milk-vetch, felwort, meadow saxifrage, green-winged orchid and sulphur clover.[126]
Hardwick Wood Hardwick Wood Green tickY 15.5 hectares (38 acres)[127] YES Caldecote
52°11′56″N 0°01′19″W / 52.199°N 0.022°W / 52.199; -0.022 (Hardwick Wood)
TL354576[127] 		WTBCN[128] Map Citation Archived 10 May 2012 at the Wayback Machine This medieval wood is now managed by coppicing. It is mainly ash and field maple, while the oldest parts have pedunculate oak with an understorey of hazel and hawthorn, while ground flora include early-purple orchid and yellow archangel.[128][129]
Hayley Wood Hayley Wood Green tickY 51.7 hectares (128 acres)[130] YES Great Gransden
52°09′32″N 0°06′50″W / 52.159°N 0.114°W / 52.159; -0.114 (Hayley Wood)
TL291529[130] 		NCR,[131] WTBCN[132] Map Citation The soil in this wood is heavy and often waterlogged, conditions which suit meadowsweet and oxlip. The numbers of oxlip declined from around 2 million to 250,000 due to the pressure of excessive numbers of deer, but they have revived since the construction of a fence in 2002. A parish boundary fence is estimated to date from the eleventh century or earlier, and it has high wildlife value.[133][134]
Hemingford Grey Meadow Hemingford Grey Meadow Green tickY 0.7 hectares (1.7 acres)[135] YES Hemingford Grey
52°18′22″N 0°06′29″W / 52.306°N 0.108°W / 52.306; -0.108 (Hemingford Grey Meadow)
TL291692[135] 		WTBCN[136] Map Citation The site is calcareous clay pasture with a wide variety of plant species, including the herbs oxeye daisy and yellow rattle. There are orchids such as common twayblades and common spotteds.[137]
Hildersham Wood Hildersham Wood Green tickY 7.4 hectares (18 acres)[138] NO Hildersham
52°05′13″N 0°14′17″E / 52.087°N 0.238°E / 52.087; 0.238 (Hildersham Wood)
TL534456[138] 		Map Citation The principal trees in this ancient wood on wet chalky clay are pedunculate oaks. The ground flora is diverse, including locally uncommon species such as broad-leaved helleborine and sweet woodruff.[139]
Histon Road Histon Road Green tickY 0.6 hectares (1.5 acres)[140] NO Cambridge
52°13′44″N 0°06′43″E / 52.229°N 0.112°E / 52.229; 0.112 (Histon Road)
TL443611[140] 		GCR[141] Map Citation This is described by Natural England as a "key Pleistocene stratigraphic site". It is one only two sites in East Anglia which has an almost complete sequence of the second half of the warm Eemian interglacial, around 120,000 years ago.[142]
Holland Hall (Melbourn) Railway Cutting Holland Hall (Melbourn) Railway Cutting Green tickY 3.3 hectares (8.2 acres)[143] NO Melbourn
52°04′01″N 0°00′43″W / 52.067°N 0.012°W / 52.067; -0.012 (Holland Hall (Melbourn) Railway Cutting)
TL364428[143] 		Map Citation The site is steeply sloping chalk grassland, which has many plants which are unique in the county, and some which are nationally uncommon, such as wild candytuft. Also present is the nationally rare great pignut.[144]
Holme Fen Holme Fen Green tickY 269.4 hectares (666 acres)[145] YES Holme
52°29′10″N 0°13′26″W / 52.486°N 0.224°W / 52.486; -0.224 (Holme Fen)
TL207890[145] 		NCR,[131] NNR[22] Map Citation Holme Fen is described by Natural England as the finest example of birch woodland in lowland Britain. Part of it was a mere which was drained in the nineteenth century, and some relict wetland plants survive such as saw sedge and fen wood-rush.[146] It is part of the Great Fen project, which aims to create a 3,700 hectares (9,100 acres) wetland wildlife area.[147]
Houghton Meadows Houghton Meadows Green tickY 4.7 hectares (12 acres)[148] YES Houghton
52°19′37″N 0°06′14″W / 52.327°N 0.104°W / 52.327; -0.104 (Houghton Meadows)
TL293716[148] 		WTBCN[149] Map Citation Some of these fields are pasture and others are hay meadows, and they display ridges and furrows from medieval ploughing. Flowers include cowslips and yellow-rattles, and there are fauna such as green woodpeckers and great crested newts.[149]
Kingston Wood and Outliers Kingston Wood Green tickY 47.4 hectares (117 acres)[150] NO Kingston
52°10′12″N 0°03′50″W / 52.17°N 0.064°W / 52.17; -0.064 (Kingston Wood and Outliers)
TL325542[150] 		Map Citation This ancient woodland is ash and field maple on chalky clay, and it is described by Natural England as one of the oldest and most intact coppiced woodlands in the county. Ground flora include dog's mercury and the nationally restricted oxlip.[151]
L-Moor, Shepreth L-Moor Green tickY 6.6 hectares (16 acres)[152] YES Shepreth
52°06′29″N 0°01′19″E / 52.108°N 0.022°E / 52.108; 0.022 (L-Moor, Shepreth)
TL386474[152] 		WTBCN[153] Map Citation This is unploughed calcareous grassland which has diverse flora such as horseshoe vetch and felwort in drier areas, and devil's bit scabious and fen bedstraw in wetter ones. The site is described by Natural England as valuable for its invertebrates.[153][154]
Langley Wood Langley Wood Green tickY 31.6 hectares (78 acres)[155] NO Bartlow
52°03′25″N 0°20′31″E / 52.057°N 0.342°E / 52.057; 0.342 (Langley Wood)
TL607424[155] 		Map Citation This ancient wood has coppiced ash and hornbeam, together with maple, hazel and oak. Flora include dog's mercury, sanicle and the uncommon sweet woodruff.[156]
Little Catworth Meadow Little Catworth Meadow Green tickY 5.2 hectares (13 acres)[157] NO Catworth
52°20′28″N 0°22′55″W / 52.341°N 0.382°W / 52.341; -0.382 (Little Catworth Meadow)
TL103727[157] 		Map Citation Archived 24 October 2012 at the Wayback Machine The meadow is traditionally managed grassland on calcareous loam, which is rare in Britain. It has mature hedgerows and a rich variety of plants such as salad burnet, dropwort, great burnet, green-winged orchid and adder's-tongue fern.[158]
Little Paxton Pits Little Paxton Pits Green tickY 127.4 hectares (315 acres)[159] PP Little Paxton
52°15′29″N 0°14′42″W / 52.258°N 0.245°W / 52.258; -0.245 (Little Paxton Pits)
TL199637[159] 		LNR[160] Map Citation Archived 24 October 2012 at the Wayback Machine These flooded former gravel pits are of national importance for wintering wildfowl, especially gadwalls. There are several nationally rare flies, such as Spilogona scutulata and Lispocephala falculata. Flora include common spotted-orchids and hare's-foot clover.[161]
Little Paxton Wood Little Paxton Wood Green tickY 44.1 hectares (109 acres)[162] NO Little Paxton
52°15′29″N 0°17′24″W / 52.258°N 0.290°W / 52.258; -0.290 (Little Paxton Wood)
TL168636[162] 		Map Citation This ancient wood is wet ash and maple on heavy calcareous clay, with seasonally waterlogged soils, and it has an extremely diverse flora. A double bank and ditch has wood melick, sweet violet and the nationally restricted spiked star-of-Bethlehem.[163]
Madingley Wood Madingley Wood Green tickY 15.2 hectares (38 acres)[164] NO Cambridge
52°13′01″N 0°02′53″E / 52.217°N 0.048°E / 52.217; 0.048 (Madingley Wood)
TL400596[164] 		Map Citation Archived 10 May 2012 at the Wayback Machine The western part of this wood is ancient pedunculate oak, with other trees including ash and field maple, with hazel and hawthorn in the shrub layer. The newer eastern woodland is elm and ash. There is a variety of mosses. The site has been extensively used by Cambridge University for research and teaching.[165]
Monks Wood and The Odd Quarter Monks Wood Green tickY 169.3 hectares (418 acres)[166] PP Wood Walton
52°24′18″N 0°14′24″W / 52.405°N 0.24°W / 52.405; -0.24 (Monk's Wood and The Odd Quarter)
TL198800[166] 		NCR,[167] NNR[22] Map Citation Archived 10 May 2012 at the Wayback Machine The site is described by Natural England as one of Britain's most important lowland woods. It is mainly of the wet ash-maple type, and trees include the rare wild service tree. There is ground flora typical of ancient woodland, together with woodland rides, ponds, streams and herb-rich grassland.[168][22]
Nene Washes Nene Washes Green tickY 1,522.9 hectares (3,763 acres)[169] PP Peterborough
52°35′N 0°04′W / 52.58°N 0.07°W / 52.58; -0.07 (Nene Washes)
TF307999[169] 		Ramsar,[170] RSPB,[171] SAC,[172] SPA[173] Map Citation This is one of Britain's few remaining areas of washland, which are viewed by Natural England as vital for the survival of wildfowl and waders. Wintering wildfowls include wigeons and Bewick's swans. The rich flora in ditches include uncommon species such as frogbit and flowering rush.[174]
Orton Pit Orton Pit Green tickY 145.8 hectares (360 acres)[175] PP Peterborough
52°31′55″N 0°17′20″W / 52.532°N 0.289°W / 52.532; -0.289 (Orton Pit)}
TL162941[175] 		SAC[176] Map Citation This extensive area of disused brick clay workings has the largest known population in Britain of great crested newts. There are ten species of stonewort, including Chara canescens, which was previously thought to be extinct in Britain, and four other nationally rare species.[177]
Orwell Clunch Pit Orwell Clunch Pit Green tickY 1.9 hectares (4.7 acres)[178] YES Orwell
52°08′13″N 0°00′36″W / 52.137°N 0.01°W / 52.137; -0.01 (Orwell Clunch Pit)
TL363506[178] 		Map Citation Archived 24 October 2012 at the Wayback Machine This former stone quarry has a rich chalk grassland flora, a habitat which has become scarce in eastern England. Herbs including kidney vetch, horseshoe vetch, spiny restharrow and wild thyme.[179][180]
Ouse Washes Ouse Washes Green tickY 2,513.6 hectares (6,211 acres)[181] PP Ely
52°28′N 0°11′E / 52.46°N 0.19°E / 52.46; 0.19 (Ouse Washes)
TL490879[181] 		NCR,[21] Ramsar,[182] RSPB,[183] SAC,[184] SPA,[185] WTBCN,[186] WWT[187] Map Citation The Washes are internationally significant for wintering and breeding wildfowl and waders, especially teal, pintails, wigeons, shovelers, pochards and Bewick's swans. The site also has rich aquatic fauna and flora, and areas of unimproved grassland.[7]
Out and Plunder Woods Out Wood Green tickY 38.6 hectares (95 acres)[188] FP Great Bradley
52°09′58″N 0°25′23″E / 52.166°N 0.423°E / 52.166; 0.423 (Out and Plunder Woods)
TL657547[188] 		Map Citation These woods on boulder clay have been little modified since the medieval period, which has allowed the development of a diverse fauna and flora. The main trees are ash, field maple and pedunculate oak, and herbs include sweet violet and early dog-violet.[189]
Overhall Grove Overhall Grove Green tickY 17.4 hectares (43 acres)[190] YES Knapwell
52°14′56″N 0°02′31″W / 52.249°N 0.042°W / 52.249; -0.042 (Overhall Grove)
TL338630[190] 		NCR,[191] WTBCN[192] Map Citation This site is the largest elm woodland in the county. It was seriously affected by Dutch elm disease, but many trees have regenerated from their bases, and the mixture of new growth and dead wood provides a very good habitat for insects and birds.[192]
Papworth Wood Papworth Wood Green tickY 8.7 hectares (21 acres)[193] YES Papworth Everard
52°14′56″N 0°06′36″W / 52.249°N 0.11°W / 52.249; -0.11 (Papworth Wood)
TL291629[193] 		Map Citation Archived 24 October 2012 at the Wayback Machine This is one of the oldest secondary woods in the county. It has diverse ground flora including brambles, rough meadow grass, stinging nettles, ground ivy, bluebells and primroses.[194]
Park Wood Park Wood Green tickY 8.1 hectares (20 acres)[195] NO Brinkley
52°09′54″N 0°23′46″E / 52.165°N 0.396°E / 52.165; 0.396 (Park Wood)
TL640546[195] 		Map Citation Archived 24 October 2012 at the Wayback Machine This is woodland of the wet ash/maple type, a scarce and declining habitat. Ground flora include bluebell, dog's mercury and oxlip, and there are indicators of ancient woodland such as herb-paris and butterfly-orchid.[196]
Perry Woods Perry Woods Green tickY 67.9 hectares (168 acres)[197] YES Kimbolton
52°17′02″N 0°20′10″W / 52.284°N 0.336°W / 52.284; -0.336 (Perry Woods)
TL136664[197] 		Map Citation Archived 10 May 2012 at the Wayback Machine These ancient woods are of the ash/maple type, an increasingly scarce habitat over its range in lowland England. The rich ground flora includes plants indicative of ancient woodland such as wood melick and early-purple orchid.[198]
Portholme Portholme Green tickY 106.0 hectares (262 acres)[199] YES Huntingdon
52°19′16″N 0°11′17″W / 52.321°N 0.188°W / 52.321; -0.188 (Portholme)
TL236708[199] 		NCR,[200] SAC[201] Map Citation The site is an alluvial flood meadow, and one of the largest areas of grassland which is still traditionally managed as a Lammas meadow. Watercourses have some unusual invertebrates, including the nationally restricted dragonfly Libellula fulva.[200]
Roman Road Roman Road Green tickY 12.4 hectares (31 acres)[202] YES Cambridge
52°08′42″N 0°13′44″E / 52.145°N 0.229°E / 52.145; 0.229 (Roman Road)
TL526520[202] 		SM[203] Map Citation This green lane has calcareous grassland, thick hedges and small copses, which provide a valuable habitat for invertebrates. There are grasses such as sheep's-fescue and quaking-grass, while herbs include wild carrot and purple milk-vetch.[204]
Sawston Hall Meadows Sawston Hall Meadows Green tickY 7.4 hectares (18 acres)[205] NO Sawston
52°07′08″N 0°10′34″E / 52.119°N 0.176°E / 52.119; 0.176 (Sawston Hall Meadows)
TL491490[205] 		Map Citation This site has spring fed peat meadows on chalk, a habitat formerly common but now rare. It has the nationally rare flower Selinum carvifolia, which is only found in Cambridgeshire. Drier grassland has a varied flora including spotted-orchid.[206]
Shippea Hill Shippea Hill Green tickY 27.6 hectares (68 acres)[207] NO Littleport
52°26′17″N 0°24′25″E / 52.438°N 0.407°E / 52.438; 0.407 (Shippea Hill)
TL637850[207] 		GCR[208] Map Citation Archived 24 October 2012 at the Wayback Machine The succession of sedimentary layers in the Fens in the Holocene epoch, the period since the last ice age, was determined on the basis of this site. It is particularly important for dating the "Fen Clay transgression" of the sea into the Fens in the Neolithic.[209][210]
Snailwell Meadows Snailwell Meadows Green tickY 15.2 hectares (38 acres)[211] NO Snailwell
52°17′02″N 0°24′00″E / 52.284°N 0.4°E / 52.284; 0.4 (Snailwell Meadows)
TL638678[211] 		Map Citation The meadows are on peat overlying spring-fed chalk, with a variety of soil conditions. Some areas are dry calcareous pasture, and others are wet neutral and marshy acidic grassland. Flowering plants include the nationally rare umbellifer Cambridge milk-parsley.[212]
Soham Wet Horse Fen Soham Wet Horse Fen Green tickY 33.8 hectares (84 acres)[213] PP Soham
52°19′48″N 0°21′50″E / 52.33°N 0.364°E / 52.33; 0.364 (Soham Wet Horse Fen)
TL612728[213] 		WTBCN[214] Map Citation Archived 24 October 2012 at the Wayback Machine This site is neutral grassland with diverse fauna and flora, including uncommon ones. Wetter areas have herbs such as green-winged orchids and adder's tongue fern, and there are cowslips and stemless thistles in drier parts. snipe breed in wet pastures.[215]
Southorpe Meadow Southorpe Meadow Green tickY 2.0 hectares (4.9 acres)[216] YES Southorpe
52°36′54″N 0°24′07″W / 52.615°N 0.402°W / 52.615; -0.402 (Southorpe Meadow)
TF083031[216] 		WTBCN[217] Map Citation This is one of the few surviving areas of neutral grassland in the county, where ridge and furrow from medieval ploughing can be seen. There is a rich variety of species, such as red fescue in drier areas, and salad burnet in damper ones.[218]
Southorpe Paddock Southorpe Paddock Green tickY 1.6 hectares (4.0 acres)[219] YES Southorpe
52°36′22″N 0°24′04″W / 52.606°N 0.401°W / 52.606; -0.401 (Southorpe Paddock)
TF084021[219] 		WTBCN[220] Map Citation Archived 24 October 2012 at the Wayback Machine This site is a rare example of unimproved grassland on the Jurassic limestone of eastern England. It has typical limestone plants such as purple milk-vetch and clustered bellflower. Mature hedgerows provide additional habitats for wildlife.[221]
Southorpe Roughs Southorpe Roughs Green tickY 9.8 hectares (24 acres)[222] NO Southorpe
52°36′54″N 0°25′01″W / 52.615°N 0.417°W / 52.615; -0.417 (Southorpe Roughs)
TF073031[222] 		Map Citation Archived 24 October 2012 at the Wayback Machine This is a disused quarry which has grassland on Jurassic limestone. The main grasses are tor-grass and sheep's fescue, and there are the nationally rare plants spotted cat's ear and pasque flower.[223]
St Neots Common St Neots Common Green tickY 33.4 hectares (83 acres)[224] YES St Neots
52°14′10″N 0°16′16″W / 52.236°N 0.271°W / 52.236; -0.271 (St Neot's Common)
TL182612[224] 		Map Citation This site on the east bank of the River Great Ouse has grassland, willow carr, ditches and ponds, which support diverse wildlife species. The grassland is traditionally maintained by grazing, and herbs in wetter areas include marsh orchids and marsh arrow grass.[225]
Stow-Cum-Quy Fen Stow-Cum-Quy Fen Green tickY 29.9 hectares (74 acres)[226] YES Lode
52°14′35″N 0°13′08″E / 52.243°N 0.219°E / 52.243; 0.219 (Stow-Cum-Quy Fen)
TL516628[226] 		Map Citation The site is calcareous loam pasture, with diverse flora and open pools which have rare aquatic plants. Grassland herbs include purging flax and salad burnet, and there are aquatic plants such as unbranched bur-reed, mare's tail and bladderwort.[227]
Sutton Heath and Bog Sutton Heath and Bog Green tickY 18.3 hectares (45 acres)[228] FP Wansford
52°35′13″N 0°23′38″W / 52.587°N 0.394°W / 52.587; -0.394 (Sutton Heath and Bog)
TF089000[228] 		Map Citation Archived 24 October 2012 at the Wayback Machine This site has calcareous grassland on Jurassic limestone and base-poor marshy neutral grassland. The base poor areas have a diverse variety of plant species, including some which are locally uncommon.[229]
Ten Wood Ten Wood Green tickY 17.7 hectares (44 acres)[230] NO Burrough Green
52°10′30″N 0°25′55″E / 52.175°N 0.432°E / 52.175; 0.432 (Ten Wood)
TL664559[230] 		Map Citation Archived 10 May 2012 at the Wayback Machine This ancient wood is of the ash/maple type, which has a high conservation value as it has a restricted and declining distribution. Other trees include hazel and pedunculate oak. There is also a population of the rare oxlip.[231]
Thriplow Meadows Thriplow Meadows Green tickY 3.5 hectares (8.6 acres)[232] YES Thriplow
52°06′07″N 0°05′49″E / 52.102°N 0.097°E / 52.102; 0.097 (Thriplow Meadows)
TL437469[232] 		Map Citation Archived 24 October 2012 at the Wayback Machine The site has two fields with neutral pastures which range from dry to marshy. These lowland habitats are now rare. Wetland herbs include ragged robin, fleabane and purple loosestrife.[233][234]
Thriplow Peat Holes Thriplow Peat Holes Green tickY 12.2 hectares (30 acres)[235] NO Thriplow
52°06′25″N 0°06′58″E / 52.107°N 0.116°E / 52.107; 0.116 (Thriplow Peat Holes)
TL450475[235] 		Map Citation The site has rare alder carr and fen habitats, enhanced by ditches and ponds, with a wide variety of invertebrates. The main vegetation is alder, ash, willow and guelder rose.[236]
Traveller's Rest Pit Traveller's Rest Pit Green tickY 2.3 hectares (5.7 acres)[237] NO Cambridge
52°13′05″N 0°05′24″E / 52.218°N 0.09°E / 52.218; 0.09 (Traveller's Rest Pit)
TL429598[237] 		GCR[238] Map Citation Archived 24 October 2012 at the Wayback Machine This is described by Natural England as an important site dating to the Anglian ice age around 450,000 years ago. It also has the most extensive collection of paleolithic stone tools in the county, which are thought to date to the Cromerian Stage, which preceded the Anglian.[239][240]
Upware Bridge Pit North Upware Bridge Pit North Green tickY 2.5 hectares (6.2 acres)[241] NO Wicken
52°19′44″N 0°15′47″E / 52.329°N 0.263°E / 52.329; 0.263 (Upware Bridge Pit North)
TL543725[241] 		GCR[242] Map Citation Archived 24 October 2012 at the Wayback Machine This site shows exposes rocks of Oxfordian age, around 160 million years ago. It was then a sea which was connected to the Tethys Ocean, and it has many Tethyan invertebrate fossils. It is described by Natural England as "an essential site for the study of Oxfordian palaeontology and palaeogeography in the English midlands".[243]
Upware North Pit Upware North Pit Green tickY 1.1 hectares (2.7 acres)[244] YES Wicken
52°19′52″N 0°15′50″E / 52.331°N 0.264°E / 52.331; 0.264 (Upware North Pit)
TL544727[244] 		Map Citation This site has several flooded pits with areas of willow and hawthorn. It is one of only two British sites which has water germander, a plant listed in the British Red List of Threatened Species. Other unusual aquatic plants are great water dock and greater pond sedge.[245]
Upware South Pit Upware South Pit Green tickY 1.1 hectares (2.7 acres)[246] YES Upware
52°18′54″N 0°15′22″E / 52.315°N 0.256°E / 52.315; 0.256 (Upware South Pit)
TL539709[246] 		GCR[247] Map Citation This site has rocks dating to the Oxfordian stage, around 160 million years ago. It was then a coral reef, and has fossils of bivalves and ammonites, as well as corals, which show affinities with the fauna of the Tethys Ocean. It is described by Natural England as a key site in study of the Oxfordian.[248]
Upwood Meadows Upwood Meadows Green tickY 6.0 hectares (15 acres)[249] YES Upwood
52°25′37″N 0°09′43″W / 52.427°N 0.162°W / 52.427; -0.162 (Upwood Meadows)
TL251826[249] 		NCR,[250] NNR,[22] WTBCN[251] Map Citation The site has three fields on calcareous clay with poor drainage, a type of pasture now very rare, and was described by Derek Ratcliffe as having "an outstandingly rich and diverse flora".[250] One of the fields, which is agriculturally unimproved, has medieval ridge and furrow.[252]
Wansford Pasture Wansford Pasture Green tickY 3.1 hectares (7.7 acres)[253] YES Wansford
52°34′55″N 0°25′26″W / 52.582°N 0.424°W / 52.582; -0.424 (Wansford Pasture)
TL069994[253] 		WTBCN[254] Map Citation This is a south-facing slope, with Jurassic limestone grassland and a flush lower down which has a wide variety of wet-loving plants, including some which are rare in the county. The ecology is maintained by avoiding the use of fertilisers and herbicides, and by grazing.[255]
Warboys and Wistow Woods Warboys Wood Green tickY 44.5 hectares (110 acres)[256] PP Warboys
52°25′08″N 0°05′24″W / 52.419°N 0.090°W / 52.419; -0.090 (Warboy's and Wistow Woods)
TL300818[256] 		WTBCN[257] Map Citation Archived 10 May 2012 at the Wayback Machine These woods have high conservation value because they are ancient ash and maple, and this habitat has sharply declined in extent since 1945. The woods have diverse flora and fauna, particularly invertebrates.[258]
Warboys Clay Pit Warboys Clay Pit Green tickY 12.6 hectares (31 acres)[259] NO Warboys
52°25′08″N 0°04′48″W / 52.419°N 0.08°W / 52.419; -0.08 (Warboys Claypit)
TL307818[259] 		GCR[260] Map Citation Archived 24 October 2012 at the Wayback Machine According to Natural England this "unrivalled Oxfordian section shows more than 20 metres (66 ft) of Upper Oxford Clay". It has ammonite fossils dating to the Late Jurassic, around 160 million years ago.[261]
Waresley Wood Waresley Wood Green tickY 54.2 hectares (134 acres)[262] YES Waresley
52°10′37″N 0°09′22″W / 52.177°N 0.156°W / 52.177; -0.156 (Waresley Wood)
TL262548[262] 		WTBCN[263] Map Citation This ancient woodland is mainly ash, field maple and hazel. There are also rides with diverse flora such as the herbs bush vetch, meadowsweet, greater burnet-saxifrage and self-heal.[264]
Weaveley and Sand Woods Weaverley Wood Green tickY 62.0 hectares (153 acres)[265] NO Gamlingay
52°10′16″N 0°12′32″W / 52.171°N 0.209°W / 52.171; -0.209 (Weaveley and Sand Woods)
TL226540[265] 		Map Citation This site has an unusually varied geology, with areas of free-draining Lower Greensand, poorly drained boulder clay and Jurassic clays. The wood is of ancient origin, and tree species include pedunculate oak and coppiced ash and field maple. Hazel is dominant in the shrub layer. There are uncommon flowers such as herb-paris, butterfly orchid and pignut.[266]
West, Abbot's and Lound Woods West, Abbot's and Lound Woods Green tickY 50.4 hectares (125 acres)[267] NO Wittering
52°35′46″N 0°26′17″W / 52.596°N 0.438°W / 52.596; -0.438 (West Abbot's and Lound Woods)
TF059010[267] 		Map Citation Archived 10 May 2012 at the Wayback Machine The site has a variety of woodland types, some of which are rare in Britain, including plateau alderwood. There are ancient woodland plants such as yellow archangel and toothwort.[268]
Whitewater Valley Whitewater Valley Green tickY 4.3 hectares (11 acres)[269] NO Wittering
52°37′12″N 0°27′40″W / 52.620°N 0.461°W / 52.620; -0.461 (Whitewater Valley)
TF043036[269] 		Map Citation Habitats in this site include a stream together with associated marsh, tall fen and willow carr. The carr has a varied flora, and the marsh has many plants rare in the county. There are also springs, which have mosses including the uncommon cratoneuron commutatum.[270]
Whittlesford - Thriplow Hummocky Fields Green tickY 55.6 hectares (137 acres)[271] NO Whittlesford
52°06′54″N 0°06′43″E / 52.115°N 0.112°E / 52.115; 0.112 (Whittlesford - Thriplow Hummocky Fields)
TL447484[271] 		Map Citation This site has the nationally rare grass-poly, and the nationally uncommon fairy shrimp chirocephalus diaphanus. They are found in shallow hollows in arable fields, which are the result of ice lenses melting at the end of the last ice age.[272]
Wicken Fen Wicken Fen Green tickY 255.0 hectares (630 acres)[273] YES Wicken
52°18′25″N 0°16′41″E / 52.307°N 0.278°E / 52.307; 0.278 (Wicken Fen)
TL554701[273] 		NCR,[274] NNR,[22] NT,[275] Ramsar,[276] SAC[73][74] Map Citation This is one of the few surviving East Anglian peat fens, and it has diverse flora and fauna. Herbs include milk parsley and yellow loosestrife, and pools have uncommon aquatic plants such as greater spearwort and lesser water plantain.[277]
Wilbraham Fens Wilbraham Fens Green tickY 62.0 hectares (153 acres) NO Cambridge
52°12′32″N 0°13′19″E / 52.209°N 0.222°E / 52.209; 0.222 (Wilbraham Fens)
TL519591 		Map Citation This is an example of a fen habitat, which is now rare in Britain, with grassland, scrub, ponds and ditches. The dominant fen species is common reed, which is present in dense stands, together with plants such as purple loosestrife and meadow rue. Herbs include harebell and field scabious.[278]
Woodwalton Fen Woodwalton Fen Green tickY 208.7 hectares (516 acres)[279] YES Ramsey
52°26′42″N 0°11′35″W / 52.445°N 0.193°W / 52.445; -0.193 (Woodwalton Fen)
TL229845[279] 		NCR,[280] NNR,[22] Ramsar,[281] SAC[73][74] Map Citation Archived 24 October 2012 at the Wayback Machine This site has one of the few remaining ranges of flora characteristic of the East Anglian Fens. There are rare fen plants such as fen wood-rush and fen violet, and ditches have uncommon aquatic plants including bladderwort and water violet.[282]
Woodwalton Marsh Woodwalton Marsh Green tickY 0.8 hectares (2.0 acres)[283] YES Ramsey
52°24′54″N 0°13′16″W / 52.415°N 0.221°W / 52.415; -0.221 (Woodwalton Marsh)
TL211812[283] 		WTBCN[284] Map Citation This grassland on calcareous clay has diverse flora, including red fescue, quaking grass, knapweed, cowslip, pepper saxifrage, green-winged orchid and the rare sulphur clover.[285] There is also a wide variety of butterflies.[284]

See also

Notes

  1. ^ The maps are provided by Natural England on the Magic Map website.
  2. ^ Citations are provided for each site by Natural England.

References

  1. ^ "Standard Area Measurements (2016) for Administrative Areas in the United Kingdom". Office for National Statistics. Archived from the original on 10 April 2017. Retrieved 10 April 2017.
  2. ^ "Population Estimates for UK, England and Wales, Scotland and Northern Ireland". Office for National Statistics. Archived from the original on 15 February 2017. Retrieved 10 April 2017.
  3. ^ a b "Cambridgeshire". Encyclopedia Britannica. 2013. Archived from the original on 11 October 2016. Retrieved 17 January 2017.
  4. ^ "Local government in Cambridgeshire". Cambridgeshire County Council. Archived from the original on 19 August 2016. Retrieved 25 July 2016.
  5. ^ "Sites of Special Scientific Interest: Designation". Natural England. Archived from the original on 6 March 2016. Retrieved 19 April 2016.
  6. ^ "Designated Sites View: Cambridgeshire". Sites of Special Scientific Interest. Natural England. Retrieved 5 March 2017.
  7. ^ a b "Ouse Washes citation" (PDF). Sites of Special Scientific Interest. Natural England. Archived (PDF) from the original on 4 March 2016. Retrieved 13 December 2016.
  8. ^ a b "Delph Bridge Drain citation" (PDF). Sites of Special Scientific Interest. Natural England. Archived (PDF) from the original on 4 March 2016. Retrieved 6 November 2016.
  9. ^ a b "Ely Pits and Meadows citation" (PDF). Sites of Special Scientific Interest. Natural England. Archived (PDF) from the original on 4 March 2016. Retrieved 1 December 2016.
  10. ^ a b "Designated Sites View: Adventurers' Land". Sites of Special Scientific Interest. Natural England. Retrieved 25 November 2016.
  11. ^ "Adventurers' Land (Quaternary of East Anglia)". Joint Nature Conservation Committee. Archived from the original on 20 December 2016. Retrieved 4 December 2016.
  12. ^ "Adventurers' Land citation" (PDF). Sites of Special Scientific Interest. Natural England. Archived (PDF) from the original on 4 March 2016. Retrieved 25 November 2016.
  13. ^ a b "Designated Sites View: Alder Carr". Sites of Special Scientific Interest. Natural England. Archived from the original on 15 September 2016. Retrieved 4 September 2016.
  14. ^ "Alder Carr citation" (PDF). Sites of Special Scientific Interest. Natural England. Archived (PDF) from the original on 4 March 2016. Retrieved 4 September 2016.
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  16. ^ "Aversley Wood". Woodland Trust. Archived from the original on 29 November 2016. Retrieved 28 November 2016.
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