List of Sites of Special Scientific Interest in Hampshire

This article is about SSSIs in Hampshire. For other counties, see List of SSSIs by Area of Search.

New forest
The New Forest

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.[1]

As of April 2020, there are 118 SSSIs in Hampshire,[2] of which 107 are designated for their biological interest, 5 for their geological interest, and 6 for both interests.

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Key

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Sites

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Site name Photograph B G Area[a] Access Location[a] Other Map and Citation[b] Description
Alresford Pond Alresford Pond Green tickY 30.2 hectares
(75 acres)[3] 		FP Alresford
51°05′38″N 1°09′25″W / 51.094°N 1.157°W / 51.094; -1.157 (Alresford Pond)
SU 591 331[3] 		Map Citation This large lake was created by Godfrey de Lucy, who was Bishop of Winchester between 1189 and 1204, to provide a reservoir of water to make the River Itchen navigable.[4] The lake has a rich aquatic plant community and large populations of breeding wetland birds, such as reed warblers and sedge warblers.[5]
Ashford Hill Woods and Meadows Ashford Hill Meadows Green tickY 141.2 hectares
(349 acres)[6] 		PP Ashford Hill
51°21′07″N 1°11′38″W / 51.352°N 1.194°W / 51.352; -1.194 (Ashford Hill Woods and Meadows)
SU 562 617[6] 		NNR[7] Map Citation This biologically rich site is a valley on London Clay and Lower Bagshot Beds. It has varied woodlands and agriculturally unimproved meadows. The diverse invertebrate fauna includes 31 species of butterflies and more than 400 species of moth, including the uncommon orange moth and pale oak eggar.[8]
Avon Valley (Bickton to Christchurch) Avon Valley Green tickY 1,403.8 hectares
(3,469 acres)[9] 		PP Ringwood
50°52′59″N 1°47′38″W / 50.883°N 1.794°W / 50.883; -1.794 (Avon Valley (Bickton to Christchurch))
SU 146 026[9] 		HIWWT,[10] NCR,[9] Ramsar,[11] SAC,[12] SPA[13] Map[c] Citation This valley has more diverse habitats and a wider range of fauna and flora than any other chalk valley in the country. There are internationally important numbers of breeding and wintering birds, such as Bewick’s swans and gadwalls. The flora include a number of nationally rare species and the river has a diverse fish fauna. Dragonflies include the rare scarce chaser.[14]
Baddesley Common Baddesley Common Green tickY 39.0 hectares
(96 acres)[15] 		PP Romsey
50°59′28″N 1°26′20″W / 50.991°N 1.439°W / 50.991; -1.439 (Baddesley Common)
SU 395 214[15] 		HIWWT,[16] SAC[17] Map Citation Most of this site is valley bog, together with damp grassland, heath and woods. The bog is not grazed and it has a rich flora and fauna, including many moths. Plants include reed, marsh cinquefoil and bog bean. There is also an area of acidic grassland with a rich flora.[18]
Basingstoke Canal Basingstoke Canal and towpath Green tickY 101.3 hectares
(250 acres)[19] 		PP Farnborough
51°16′37″N 0°46′41″W / 51.277°N 0.778°W / 51.277; -0.778 (Basingstoke Canal)
SU 855 538[19] 		NCR[20] Map[d] Citation This is the most botanically rich aquatic area in England and flora include hairlike pondweed and tasteless water-pepper, both of which are nationally scarce. The site is also nationally important for its invertebrates. There are 24 species of dragonfly and other species include two nationally rare Red Data Book insects.[21]
Beacon Hill, Warnford Beacon Hill Green tickY 46.4 hectares
(115 acres)[22] 		YES Winchester
51°00′04″N 1°08′31″W / 51.001°N 1.142°W / 51.001; -1.142 (Beacon Hill, Warnford)
SU 603 227[22] 		NCR,[22] NNR,[23] SM[24] Map Citation This spur of chalk grassland over the Meon Valley is managed by rabbit grazing. It has a rich herb flora, with species such as horseshoe vetch, yellow-wort and clustered bellflower. Twenty-five species of butterfly are known to breed on the site, including the rare silver-spotted skipper and Duke of Burgundy.[25]
Bentley Station Meadow Bentley Station Meadow Green tickY 5.2 hectares
(13 acres)[26] 		FP Farnham
51°10′48″N 0°52′01″W / 51.180°N 0.867°W / 51.180; -0.867 (Bentley Station Meadow)
SU 793 429[26] 		Map Citation This area of unimproved herb-rich grassland is dominated by cock’s-foot, Yorkshire fog and tufted hairgrass. There is a very rich invertebrate fauna, especially hoverflies and butterflies. Hoverflies include the uncommon Sphaerophoria taeniata and Xanthogramma citrofasiatum, while there are 22 species of breeding butterflies.[27]
Bere Mill Meadows Bere Mill Meadows Green tickY 10.3 hectares
(25 acres)[28] 		FP Whitchurch
51°13′37″N 1°19′12″W / 51.227°N 1.320°W / 51.227; -1.320 (Bere Mill Meadows)
SU 476 477[28] 		Map Citation These damp meadows in the flood plain of the River Test have a network of ditches with plants such as floating sweet-grass and lesser water-parsnip. The meadows have a rich variety of wet grassland herbs, including bogbean, ragged-robin, water avens, marsh valerian and southern marsh orchid.[29]
Binswood Binswood Green tickY 62.5 hectares
(154 acres)[30] 		YES Alton
51°07′37″N 0°54′36″W / 51.127°N 0.910°W / 51.127; -0.910 (Binswood)
SU 764 370[30] 		Map Citation This is a small surviving part of the Royal Forest of Woolmer. It is mainly unimproved grassland with scattered trees and areas of dense woodland, and the oldest trees may be 200 years old. It is still managed as a wood with common rights of grazing, and actively managed wood pasture is now a rare habitat.[31]
Blackwater Valley Blackwater Valley Green tickY 33.9 hectares (84 acres)[32] PP Sandhurst
51°20′13″N 0°47′06″W / 51.337°N 0.785°W / 51.337; -0.785 (Blackwater Valley)
SU847605[32] 		Map[e] Citation The River Blackwater runs through the site, which also has wet valley alder wood, swamp and alluvial meadows. The meadows have several species of flora associated with ancient grassland and they are a nationally rare and threatened habitat. An area of deciduous woodland has the rare sedge, Carex elongata.[33]
Botley Wood and Everett's and Mushes Copses Botley Wood Green tickY 352.7 hectares
(872 acres)[34] 		PP Winchester
50°53′17″N 1°13′55″W / 50.888°N 1.232°W / 50.888; -1.232 (Botley Wood and Everett's and Mushes Copses)
SU 541 101[34] 		Map Citation Botley Wood is nationally outstanding for butterflies, with more than 30 breeding species, including pearl-bordered fritillary, white-letter hairstreak, dark green fritillary and purple emperor. Everett’s and Mushes Copses have a rich flora, with over fifty species of flowering plants typical of ancient woodlands.[35]
Boulsbury Wood Boulsbury Wood Green tickY 119.8 hectares
(296 acres)[36] 		FP Damerham
50°56′31″N 1°54′07″W / 50.942°N 1.902°W / 50.942; -1.902 (Boulsbury Wood)
SU 070 158[36] 		Map[c] Citation This site consists of parts of Boulsbury Wood, High Wood, Stone Hill Wood, Martin Wood and Blagdon Hill Wood. It has diverse habitats and flora, and Boulsbury Wood is the most species-rich wood in the county. Some parts are ancient woodland, with records dating from the thirteenth century.[37]
Bourley and Long Valley Bourley and Long Valley Green tickY 823.5 hectares
(2,035 acres)[38] 		PP Fleet
51°15′18″N 0°48′22″W / 51.255°N 0.806°W / 51.255; -0.806 (Bourley and Long Valley)
SU 834 513[38] 		SPA[39] Map Citation This site has varied habitats, with heath, woodland, scrub, mire and grassland. The heathland is important for three vulnerable birds, woodlarks, nightjars and Dartford warblers. There is a rich invertebrate fauna, including the nationally scarce Eumenes coarctatus potter wasp, silver-studded blue butterfly and downy emerald dragonfly.[40]
Bramshill Bramshill Green tickY 673.3 hectares
(1,664 acres)[41] 		FP Hook
51°20′20″N 0°54′18″W / 51.339°N 0.905°W / 51.339; -0.905 (Bramshill)
SU 764 606[41] 		SPA[39] Map Citation This site has a conifer plantation with internationally important populations of woodlarks, nightjars and Dartford warblers. There are also several pools and mires, which have large populations of dragonflies and damselflies, together with an unimproved meadow which provides a habitat for a nationally rare flowering plant, small fleabane.[42]
Bramshott and Ludshott Commons Ludshott Common Green tickY 374.4 hectares
(925 acres)[43] 		PP Liphook
51°06′14″N 0°46′55″W / 51.104°N 0.782°W / 51.104; -0.782 (Bramshott and Ludshott Commons)
SU 854 346[43] 		SPA[44] Map Citation The site has large areas of heath which are dominated by heather, bell heather, common gorse and dwarf gorse. There are also woodland areas with ancient trees, with at least 87 taxa of epiphytic lichens, most of which are associated with ancient woods and several of which are rare.[45]
Bransbury Common Bransbury Common Green tickY 158.6 hectares
(392 acres)[46] 		PP Wherwell
51°10′16″N 1°24′50″W / 51.171°N 1.414°W / 51.171; -1.414 (Bransbury Common)
SU 411 415[46] 		NCR[47] Map Citation This site has two different habitats. The soil of the common is peat over gravel, and the dominant plants are purple moor-grass and greater tussock-sedge. There is also a former water meadow, which has flowering plants including lady's smock, marsh marigold and early marsh-orchid.[48]
Breamore Marsh Green tickY 14.8 hectares
(37 acres)[49] 		Breamore
50°57′36″N 1°46′52″W / 50.960°N 1.781°W / 50.960; -1.781 (Breamore Marsh)
SU 155 179[49] 		Map Citation
Brickworth Down and Dean Hill Green tickY 120.4 hectares
(298 acres)[50] 		Salisbury
51°01′48″N 1°39′29″W / 51.030°N 1.658°W / 51.030; -1.658 (Brickworth Down and Dean Hill)
SU 241 257[50] 		Map[f] Citation
Brockley Warren Green tickY 13.0 hectares
(32 acres)[51] 		Chilbolton
51°07′44″N 1°24′11″W / 51.129°N 1.403°W / 51.129; -1.403 (Brockley Warren)
SU 419 368[51] 		Map Citation
Broughton Down Broughton Down Green tickY 45.8 hectares
(113 acres)[52] 		PP Nether Wallop
51°05′46″N 1°35′20″W / 51.096°N 1.589°W / 51.096; -1.589 (Broughton Down)
SU 289 330[52] 		HIWWT[53] Map Citation This sloping site on chalk has grassland which is grazed by rabbits and has many anthills. There are also areas of scrub and mature woodland. Insects include silver-spotted skipper, Duke of Burgundy fritillary and Essex skipper butterflies and chalk carpet moths.[54]
Browndown Browndown Green tickY 66.5 hectares
(164 acres)[55] 		YES Gosport
50°47′20″N 1°10′52″W / 50.789°N 1.181°W / 50.789; -1.181 (Browndown)
SZ 578 991[55] 		Map Citation This is a shingle beach owned by the Ministry of Defence, which has areas of heather, grass heath and gorse. There are a range of invertebrates specialising in these habitats, including 90 flies, 60 aculeata and 83 true bugs, including the rare Dalman's leatherbug.[56]
Broxhead and Kingsley Commons Broxhead Common Green tickY 105.1 hectares
(260 acres)[57] 		YES Whitehill
51°07′59″N 0°51′29″W / 51.133°N 0.858°W / 51.133; -0.858 (Broxhead and Kingsley Commons)
SU 800 377[57] 		LNR,[58] SPA[44] Map Citation These commons have areas of heath, acid grassland, woodland and scrub. The site is one of the most important in southern Britain for lichens, with more than 25 terricolous species, and there are also three protected birds, 25 rare bees, wasps and ants, and the nationally rare sand lizard.[59]
Burghclere Beacon Burghclere Beacon Green tickY 80.7 hectares
(199 acres)[60] 		YES Burghclere
51°18′36″N 1°20′38″W / 51.310°N 1.344°W / 51.310; -1.344 (Burghclere Beacon)
SU 458 570[60] 		NCR,[61] SM[62] Map Citation There is an Iron Age hillfort at the top of this chalk grassland site. There is a rich variety of herbs, including lady's bedstraw, bird's-foot trefoil, fairy flax, creeping thistle, hedge bedstraw, horseshoe vetch and felwort.[63]
Burton Common Burton Common Green tickY 39.1 hectares
(97 acres)[64] 		YES Christchurch
50°45′29″N 1°43′41″W / 50.758°N 1.728°W / 50.758; -1.728 (Burton Common)
SZ 193 954[64] 		Map Citation This dry heath has over-mature heather with a rich bryophyte and lichen flora. There are populations of sand lizards and smooth snakes, both of which are species associated with mature dry heathland. There are also areas of deciduous woodland along the banks of a stream and of Scots pine.[65]
Butser Hill Butser Hill Green tickY Green tickY 239.7 hectares
(592 acres)[66] 		YES Waterlooville
50°47′38″N 0°59′02″W / 50.794°N 0.984°W / 50.794; -0.984 (Butser Hill)
SU 714 199[66] 		GCR,[67] LNR,[68] NNR,[69] SAC,[70] SM[71] Map Citation This chalk hill is part of Queen Elizabeth Country Park. It has areas of dense yew woodland, mixed scrub and grassland which is grazed by sheep and rabbits. There is a rich flora, especially bryophytes.[72]
Butter Wood Butter Wood Green tickY 133.0 hectares
(329 acres)[73] 		PP Basingstoke
51°15′50″N 0°58′41″W / 51.264°N 0.978°W / 51.264; -0.978 (Butter Wood)
SU 714 522[73] 		LNR[74] Map Citation This site is mainly deciduous woodland with a diverse geology and structure. Most of it is former wood pasture, with many glades and broad bridleways, and there are also several copses which were managed as coppice with standards. Fauna include a rich Lepidoptera, including 25 species of butterfly.[75]
Castle Bottom to Yateley and Hawley Commons Yateley Common Green tickY 922.7 hectares
(2,280 acres)[76] 		PP Camberley
51°13′52″N 0°49′41″W / 51.231°N 0.828°W / 51.231; -0.828 (Castle Bottom to Yateley and Hawley Commons)
SU 818 586[76] 		NNR,[77] SPA[39] Map Citation This site of heathland and conifer plantation has an internationally important population of Dartford warbler and populations of two other protected birds, woodlark and nightjar. It also has an outstanding assemblage of dragonflies and damselflies, with 19 out of the 37 British species. Other invertebrates include the nationally rare conopid fly, Myopa fasciata.[78]
Catherington Down Catherington Down Green tickY 12.8 hectares
(32 acres)[79] 		YES Waterlooville
50°55′26″N 1°01′05″W / 50.924°N 1.018°W / 50.924; -1.018 (Catherington Down)
SU 691 143[79] 		LNR[80] Map Citation This western sloping site is chalk grassland with prominent lynchet strips dating to the Middle Ages. It is managed by grazing and has a variety of chalk herbs, such as pyramidal orchid, round-headed rampion and autumn lady's-tresses. There is also a narrow belt of woodland.[81]
Cheesefoot Head Cheesefoot Head Green tickY 13.4 hectares
(33 acres)[82] 		YES Winchester
51°03′00″N 1°14′56″W / 51.050°N 1.249°W / 51.050; -1.249 (Cheesefoot Head)
SU 528 281[82] 		Map Citation The SSSI is a steeply sloping area of chalk grassland, which is grazed by cattle and rabbits. There is a full range of downland grass species, especially fescues and bents. Herbs include dwarf thistle and fragrant orchid.[83]
Chichester Harbour Chichester Harbour Green tickY 3,733.5 hectares
(9,226 acres)[84] 		PP Chichester
50°48′32″N 0°54′58″W / 50.809°N 0.916°W / 50.809; -0.916 (Chichester Harbour)
SU 765 016[84] 		GCR[85] LNR[86][87] NCR[88] Ramsar[89][90] SAC[91] SPA[92] Map[g] Citation The harbour has diverse habitats, including intertidal mudflats, shingle, saltmarsh, sand dunes, marshes and woodland. The mudflats provide feeding grounds for internationally important numbers of ringed plovers, grey plovers, redshanks, black-tailed godwits, dunlins, sanderlings, curlews and greenshanks. There are geologically important sand dunes and shingles at East Head and east of Langstone.[93]
Chilbolton Common Chilbolton Common Green tickY 35.5 hectares
(88 acres)[94] 		PP Stockbridge
51°09′25″N 1°26′56″W / 51.157°N 1.449°W / 51.157; -1.449 (Chilbolton Common)
SU 386 399[94] 		Map Citation This site comprises a stretch of the River Test and its neighbouring flood plain. Habitats include marshy meadows, fenn, willow carr and chalk downland. The flora is rich and diverse, with more than 265 species of flowering plant recorded, such as marsh arrowgrass, bog pimpernel, adders-tongue fern and early marsh-orchid.[95]
Coombe Wood and The Lythe Coombe Wood and The Lythe Green tickY 44.0 hectares
(109 acres)[96] 		PP Alton
51°06′18″N 0°55′59″W / 51.105°N 0.933°W / 51.105; -0.933 (Coombe Wood and The Lythe)
SU 748 345[96] 		NT,[97] SAC[98] Map Citation This site has woods on Wealden Upper Greensand with a rich bryophyte flora and calcareous ground flora, especially green hellebore and violet helleborine. There are also meadows bordering a stream and an oak and hazel wood on Gault clay.[99]
Coulters Dean Coulters Dean Green tickY 2.2 hectares
(5.4 acres)[100] 		PP Petersfield
50°57′58″N 0°56′17″W / 50.966°N 0.938°W / 50.966; -0.938 (Coulters Dean)
SU 747 190[100] 		HIWWT[101] Map Citation This is chalk grassland on a west facing slope of the South Downs. It has a rich flora and invertebrate fauna, which has been recorded periodically since 1914. Flowering plants include horseshoe vetch, rampion, clustered bellflower and at least eleven species of orchid.[102]
Crab Wood Crab Wood Green tickY 73.0 hectares
(180 acres)[103] 		PP Winchester
51°03′50″N 1°22′55″W / 51.064°N 1.382°W / 51.064; -1.382 (Crab Wood)
SU 434 296[103] 		LNR[104] Map Citation This site has been wooded at least since the sixteenth century. It has a hazel layer which has been coppiced, large oaks and some beech, ash and birch trees. There is a rich butterfly fauna, including purple emperors.[105]
Danebury Hill Danebury Hill Green tickY 13.7 hectares
(34 acres)[106] 		YES Stockbridge
51°08′17″N 1°32′13″W / 51.138°N 1.537°W / 51.138; -1.537 (Danebury Hill)
SU 325 377[106] 		LNR[107] Map Citation This gently sloping site surrounds Danebury, which is a hill fort dating to the Iron Age. It has herb-rich chalk grassland which is grazed by rabbits and sheep, and there are also areas of mixed and juniper scrub. Flowering plants include the scarce burnt-tip orchid, field fleawort and frog orchid.[108]
Dibden Bay Dibden Bay Green tickY 229.4 hectares
(567 acres)[109] 		YES Southampton
50°52′55″N 1°25′12″W / 50.882°N 1.420°W / 50.882; -1.420 (Dibden Bay)
SU 409 093[109] 		Map Citation Most of this site was formed by deposition of material dredged from Southampton Water. It has been designated an SSSI because it has a nationally important collection of invertebrates, including 21 species which are nationally rare and another 67 which are nationally scarce. The site is also important because of its nesting lapwings, and there are wintering wildfowl such as wigeon, teal, pintail and mallard.[110]
Downend Chalk Pit Green tickY 4.4 hectares
(11 acres)[111] 		Fareham
50°51′18″N 1°08′56″W / 50.855°N 1.149°W / 50.855; -1.149 (Downend Chalk Pit)
SU 600 065[109] 		GCR[112] Map Citation
Dunbridge Pit Green tickY 0.7 hectares
(1.7 acres)[113] 		Romsey
51°01′48″N 1°33′04″W / 51.030°N 1.551°W / 51.030; -1.551 (Dunbridge Pit)
SU 316 257[113] 		GCR[114][115] Map Citation
Duncroft Farm Pit Duncroft Farm Pit Green tickY 0.1 hectares
(0.25 acres)[116] 		NO Newbury
51°19′41″N 1°19′05″W / 51.328°N 1.318°W / 51.328; -1.318 (Duncroft Farm Pit)
SU 476 590[116] 		GCR[117] Map Citation This site exposes beds dating to the Upper Chalk of the Late Cretaceous epoch, 100 to 66 million years ago. The strata are in the middle of the Kingsclere Monocline, a steep fold which is thought to be due to later movement in the underlying rocks.[118]
East Aston Common East Aston Common Green tickY 18.2 hectares
(45 acres)[119] 		PP Andover
51°12′07″N 1°21′50″W / 51.202°N 1.364°W / 51.202; -1.364 (East Aston Common)
SU 445 450[119] 		Map Citation This site in the flood plain of the River Test is part of one of the finest chalk stream habitats in Britain. It has alluvial meadows with a rich variety of herbs, areas of tall fen and a wide and shallow stretch of the river. There are many wetland birds, such as grasshopper warblers, water rails and reed bunting.[120]
Ebblake Bog Ebblake Bog Green tickY 11.3 hectares
(28 acres)[121] 		PP Ringwood
50°51′43″N 1°51′07″W / 50.862°N 1.852°W / 50.862; -1.852 (Ebblake Bog)
SU 105 070[121] 		Ramsar,[122] SAC,[123] SPA[124] Map[c] Citation This mire in the valley of the Moors River has a deep layer of peat. It has a different ecology from similar mires in the New Forest because, unlike them, it has not been grazed. It is dominated by willow, bog myrtle, purple moor grass and Sphagnum mosses and there are several shallow pools.[125]
Eelmoor Marsh Eelmoor Marsh Green tickY 66.3 hectares
(164 acres)[126] 		PP Aldershot
51°16′26″N 0°47′49″W / 51.274°N 0.797°W / 51.274; -0.797 (Eelmoor Marsh)
SU 840 534[126] 		SPA[39] Map Citation This site has a bog with deep peat, grass heath, woodland and a network of ditches. The bog has more than 250 species of flowering plants and grasses, including the insectivorous common butterwort, pale butterwort, small bladderwort and common sundew. There is also a diverse invertebrate fauna.[127]
Eling and Bury Marshes Eling and Bury Marshes Green tickY 112.3 hectares
(277 acres)[128] 		PP Southampton
50°54′32″N 1°28′08″W / 50.909°N 1.469°W / 50.909; -1.469 (Eling and Bury Marshes)
SU 374 123[128] 		Ramsar,[129] SAC,[90] SPA[130] Map Citation This site is composed of two dissimilar saltmarshes which are separated by intertidal mudflats. Eling Great Marsh is grazed and has a close sward, while Bury Marsh is ungrazed and has a more diverse flora. The site is part of Southampton Water, a tidal estuary which is nationally important for its populations of waders.[131]
Fleet Pond Fleet Pond Green tickY 48.3 hectares
(119 acres)[132] 		YES Fleet
51°17′17″N 0°49′26″W / 51.288°N 0.824°W / 51.288; -0.824 (Fleet Pond)
SU 821 550[132] 		LNR[133] Map Citation This large and shallow lake is surrounded by reed beds, alder carr and oak and birch woodland. The lake has a rich aquatic flora and fauna, including large populations of reed warblers and other wetland birds.[134]
Fletchwood Meadows Green tickY " 7.6 hectares
(19 acres)[135] 		Southampton
50°54′00″N 1°31′08″W / 50.900°N 1.519°W / 50.900; -1.519 (Fletchwood Meadows)
SU 339 113[135] 		HIWWT[136] Map Citation
Foxlease and Ancells Meadows Foxlease and Ancells Meadows Green tickY 68.8 hectares
(170 acres)[137] 		PP Fleet
51°18′07″N 0°48′40″W / 51.302°N 0.811°W / 51.302; -0.811 (Foxlease and Ancells Meadows)
SU 830 565[137] 		HIWWT[138][139] Map Citation This site is mainly composed of species-rich meadows, which are damp and acidic. There also many ponds and ditches which have a diverse flora, including water violet and the nationally declining marsh stitchwort. Over 240 species of plants have been recorded, including 17 sedges.[140]
Galley Down Wood Galley Down Wood Green tickY 16.6 hectares
(41 acres)[141] 		FP Winchester
50°58′05″N 1°11′06″W / 50.968°N 1.185°W / 50.968; -1.185 (Galley Down Wood)
SU 573 190[141] 		Map Citation This wood, which was planted with beech trees in around 1930, has a well developed beech flora. Flowering plants include bird's-nest orchid, white helleborine, greater butterfly-orchid, common spotted orchid and the nationally rare long-leaved helleborine.[142]
Gilkicker Lagoon Green tickY 4.1 hectares
(10 acres)[143] 		Gosport
50°46′34″N 1°08′20″W / 50.776°N 1.139°W / 50.776; -1.139 (Gilkicker Lagoon)
SZ 608 977[143] 		Ramsar,[129] SAC[144] Map Citation
Greywell Fen Greywell Fen Green tickY 38.0 hectares
(94 acres)[145] 		PP Hook
51°15′07″N 0°58′16″W / 51.252°N 0.971°W / 51.252; -0.971 (Greywell Fen)
SU 719 508[145] 		HIWWT,[146] NCR[147] Map Citation

This 2-kilometre (1.2-mile) long site is calcareous fen. There is a large area of wet grassland, which is grazed by cattle, and a small area of carr woodland. Meadow flora include cowslip, dyer's greenweed and pepper-saxifrage.[148]

Greywell Tunnel Greywell Tunnel Green tickY 0.4 hectares
(0.99 acres)[149] 		NO Hook
51°15′32″N 0°58′48″W / 51.259°N 0.980°W / 51.259; -0.980 (Greywell Tunnel (Basingstoke Canal))
SU 713 516[149] 		Map Citation This tunnel in the Basingstoke Canal has a stable microclimate as a result of a roof fall in 1932, making it suitable for occupation by bats. It has the largest known population of any site in Britain, estimated at approximately 2,000. There are at least five species, Natterer's, Daubenton’s, whiskered, brown long-eared and Brandt's.[150]
Hazeley Heath Hazeley Heath Green tickY 180.8 hectares
(447 acres)[151] 		YES Hook
51°19′05″N 0°55′08″W / 51.318°N 0.919°W / 51.318; -0.919 (Hazeley Heath)
SU 754 582[151] 		SPA[39] Map Citation This large heath has a variety of habitats due to variations in soil, topography and land use. These include areas of acid grassland, bracken, purple moor-grass, dry and wet heath, dense gorse, birch woods and bog.[152]
Heath Brow Green tickY 1.9 hectares
(4.7 acres)[153] 		Farnham
51°14′13″N 0°49′26″W / 51.237°N 0.824°W / 51.237; -0.824 (Heath Brow)
SU 822 493[153] 		GCR[154] Map Citation
Highclere Park Highclere Park Green tickY 69.6 hectares
(172 acres)[155] 		YES Newbury
51°20′20″N 1°21′00″W / 51.339°N 1.350°W / 51.339; -1.350 (Highclere Park)
SU 454 602[155] 		RHPG[156] Map Citation This is the earliest documented estate in the county, recorded in 749, and it was landscaped by Capability Brown in around 1770. The mature trees have a rich and diverse lichen and moss flora, with many species typical of ancient woodland. There are two lakes, which were originally fishponds of the Bishop of Winchester, and they are bordered by areas of swamp and fen. There are also areas of grassland and the site is notable for its rich invertebrate populations.[157]
Highcliffe to Milford Cliffs Highcliffe to Milford Cliffs Green tickY 110.1 hectares
(272 acres)[158] 		YES New Milton
50°43′59″N 1°39′47″W / 50.733°N 1.663°W / 50.733; -1.663 (Highcliffe to Milford Cliffs)
SZ 239 926[158] 		GCR[159][160][161][162][163] Map[c] Citation This site stretches along the cliffs of Christchurch Bay for 9-kilometre (5.6-mile). It exposes the fossil rich strata of the Barton Beds and Headon Beds, dating to the Eocene epoch around 40 million years ago, and is the type locality for many species of fauna and flora. The Barton Beds are capped by Pleistocene gravels which are rich in Paleolithic artefacts.[164]
Hook Common and Bartley Heath Hook Common Green tickY 129.4 hectares
(320 acres)[165] 		YES Hook
51°16′26″N 0°57′54″W / 51.274°N 0.965°W / 51.274; -0.965 (Hook Common and Bartley Heath)
SU 723 533[165] 		HIWWT[166] Map Citation This site is of particular interest because of its extensive areas of wet heath, which rarely survives in the Thames Basin. There are also areas of dry heath and oak and birch woodland. There is a rich invertebrate assemblage, including the Red Data Book moths Stenoptila graphodactyla and Idaea dilutaria, and the hoverfly Microdon mutabilis.[167]
Hook Heath Meadows Green tickY 5.9 hectares
(15 acres)[168] 		Portsmouth
50°52′05″N 1°05′10″W / 50.868°N 1.086°W / 50.868; -1.086 (Hook Heath Meadows)
SU 644 080[168] 		HIWWT[136] Map Citation
Hurst Castle and Lymington River Estuary Hurst Castle and Lymington River Estuary Green tickY Green tickY 1,077.3 hectares
(2,662 acres)[169] 		PP Lymington
50°44′10″N 1°31′55″W / 50.736°N 1.532°W / 50.736; -1.532 (Hurst Castle and Lymington River Estuary)
SZ 331 930[169] 		GCR,[170][171] HIWWT,[172] LNR,[173][174][175] NCR,[176] NNR[177] Ramsar,[129] SAC,[90][144] SPA[130] Map Citation This site has a diverse range of coastal habitats, including intertidal muds, lagoons, fresh, brackish and salt marshes, estuaries and shingle ridges. It is internationally important for wintering wildfowl, and invertebrates include eight nationally rare species. It is geologically important as the basis of a seminal paper explaining the relationship of beach alignment to the direction of dominant waves.[178]
Hythe to Calshot Marshes Calshot Marshes Green tickY 591.8 hectares
(1,462 acres)[179] 		PP Southampton
50°50′42″N 1°21′14″W / 50.845°N 1.354°W / 50.845; -1.354 (Hythe to Calshot Marshes)
SU 456 052[179] 		HIWWT,[180] LNR,[181] Ramsar,[129] SAC,[90] SPA[130] Map Citation These areas of saltmarsh and mudflats have nationally important numbers of wintering waders and wildfowl, such as black-tailed godwit, grey plover and dunlin. The site is internationally important for dark-bellied brent geese as it has over 1% of the world population. The benthic zone has a dense concentration of invertebrates which provide the birds' main food.[182]
Ladle Hill Ladle Hill Green tickY 10.5 hectares
(26 acres)[183] 		YES Newbury
51°18′29″N 1°19′01″W / 51.308°N 1.317°W / 51.308; -1.317 (Ladle Hill)
SU 477 568[183] 		SM[184] Map Citation This site on the slopes and ramparts of an Iron Age hill fort is chalk grassland with a rich variety of flora. It is one of only about six sites in Britain which has the burnt-tip orchid, and other flowering plants include hairy rock-cress and chalk milkwort.[185]
Langstone Harbour Langstone Harbour Green tickY 2,085.4 hectares
(5,153 acres)[186] 		PP Portsmouth
50°49′05″N 1°00′54″W / 50.818°N 1.015°W / 50.818; -1.015 (Langstone Harbour)
SU 695 025[186] 		HIWWT,[187][188] LNR,[189][190][191] NCR,[192] Ramsar,[89] SAC,[90][144] SPA[92] Map Citation This is a tidal basin and at low water large areas of mudflats are exposed. It is internationally important for its large numbers of wintering wildfowl and waders, and for its many intertidal invertebrates. It has been the subject of important ecological research on its algae and invertebrates.[193]
Lee-on-The Solent to Itchen Estuary Lee-on-The Solent to Itchen Estuary Green tickY Green tickY 585.9 hectares
(1,448 acres)[194] 		PP Southampton
50°51′04″N 1°18′36″W / 50.851°N 1.310°W / 50.851; -1.310 (Lee-on-The Solent to Itchen Estuary)
SU 487 059[194] 		GCR,[195][196] LNR,[197][198][199] Ramsar,[129] SAC,[90] SM,[200] SPA[130] Map Citation This site is mainly intertidal muds, and there are also areas of saltmarsh, vegetated shingle, reedbeds, deciduous woodland and marshy grassland. It is outstanding for nationally scarce coastal plants, internationally important for dark-bellied geese, and nationally important for eight other species of birds, including great crested grebe and ringed plover. The site is also important for Palaeolithic artefacts and the fossils of Eocene birds.[201]
Lincegrove and Hackett's Marshes Lincegrove and Hackett's Marshes Green tickY 37.8 hectares
(93 acres)[202] 		PP Fareham
50°52′34″N 1°18′32″W / 50.876°N 1.309°W / 50.876; -1.309 (Lincegrove and Hackett's Marshes)
SU 487 087[202] 		LNR,[203] Ramsar,[129] SAC,[90] SPA[130] Map Citation This site is one of the best examples of saltmarshes on the south coast. It is dominated by sea purslane and common cordgrass, with other flora including sea lavender, thrift, sea aster and sea clubrush.[204]
Lower Test Valley Lower Test Valley Green tickY 142.0 hectares
(351 acres)[205] 		PL Southampton
50°55′41″N 1°28′59″W / 50.928°N 1.483°W / 50.928; -1.483 (Lower Test Valley)
SU 364 144[205] 		HIWWT,[206] Ramsar,[129] SAC,[90] SPA[130] Map Citation The valley has extensive reed beds, tidally flooded creeks, unimproved grassland and scattered willow trees. More than 450 flowering plants have been recorded, including the nationally rare green-flowered helleborine. The reed beds have large populations of wetland breed birds.[207]
Lye Heath Marsh Green tickY 4.4 hectares
(11 acres)[208] 		Winchester
50°52′19″N 1°04′48″W / 50.872°N 1.080°W / 50.872; -1.080 (Lye Heath Marsh)
SU 648 085[208] 		Map Citation
Lymington River Lymington River Green tickY Green tickY 34.8 hectares
(86 acres)[209] 		PP Brockenhurst
50°48′43″N 1°34′34″W / 50.812°N 1.576°W / 50.812; -1.576 (Lymington River)
SU 300 015[209] 		GCR,[210] NCR,[211] Ramsar,[129][212] SPA[213] Map Citation This site covers the river and its tributaries Highland Water, Ober Water and Mill Lawn Brook, and no other system in England shows such a rapid succession of plant communities in such a short stretch of river. Ober Water has a very unusual and diverse flora and several rare and protected species of dragonfly. Highland Water is important for illustrating fluvial processes in rivers in southern England which have not been subject to modification.[214]
Lymington River Reedbeds Lymington River Reedbeds Green tickY 41.7 hectares
(103 acres)[215] 		YES Lymington
50°46′12″N 1°32′35″W / 50.770°N 1.543°W / 50.770; -1.543 (Lymington River Reedbeds)
SZ 323 968[215] 		HIWWT,[216] Ramsar,[129] SPA[130] Map Citation This site in the Lymington River estuary was formerly tidal, but salt water has been excluded since the nineteenth century by a one way tide flap. It has reedbeds and unimproved grassland which provide an important habitat for breeding and migrating birds. The reedbeds have large populations of aphids, which provide food for the birds.[217]
Mapledurwell Fen Green tickY 0.4 hectares
(0.99 acres)[218] 		Basingstoke
51°15′58″N 1°01′52″W / 51.266°N 1.031°W / 51.266; -1.031 (Mapledurwell Fen)
SU 677 523[218] 		HIWWT[219] Map Citation
Martin and Tidpit Downs Martin and Tidpit Downs Green tickY 367.5 hectares
(908 acres)[220] 		YES Salisbury
50°58′23″N 1°56′02″W / 50.973°N 1.934°W / 50.973; -1.934 (Martin and Tidpit Downs)
SU 047 193[220] 		NCR,[221] NNR,[222] SM[223] Map Citation This site is rich in prehistoric earthworks, including Bokerley Dyke. It has chalk grassland, heath and scrub, with a rich herb flora. Sheep grazing is increasing the botanical quality of the grassland. There is an outstanding assemblage of butterflies, with 36 species recorded, including marbled white, dark green fritillary, silver-spotted skipper and Duke of Burgundy.[224]
Micheldever Spoil Heaps Micheldever Spoil Heaps Green tickY 32.1 hectares
(79 acres)[225] 		YES Basingstoke
51°11′46″N 1°15′25″W / 51.196°N 1.257°W / 51.196; -1.257 (Micheldever Spoil Heaps)
SU 520 444[225] 		Map Citation This site is composed of spoil heaps from nineteenth-century railway construction, and it is described by Natural England as "of quite exceptional botanical importance". Most species have colonised the site from nearby, but some from a distance, and the plant assemblage is in a state of flux, with many rareties. There are large populations of fly orchids.[226]
Moorgreen Meadows Moorgreen Meadows Green tickY 14.3 hectares
(35 acres)[227] 		YES Eastleigh
50°55′44″N 1°18′50″W / 50.929°N 1.314°W / 50.929; -1.314 (Moorgreen Meadows)
SU 483 146[227] 		Map Citation These meadows are important for their populations of the genus marsh orchid, especially the northern marsh orchid, which is not found at any other location in southern England. They grow close to four other marsh orchid species, early marsh-orchid, common spotted orchid, heath spotted-orchid and southern marsh orchid. Hybrids occur in every combination, making the site a centre of micro-evolution.[228]
The Moors, Bishop's Waltham The Moors, Bishop's Waltham Green tickY 28.0 hectares
(69 acres)[229] 		PP Winchester
50°56′56″N 1°12′11″W / 50.949°N 1.203°W / 50.949; -1.203 (The Moors, Bishop's Waltham)
SU 561 169[229] 		LNR,[230] NCR[229] Map Citation These unimproved wet meadows and alder carr drain into Mill Pond at the centre of the site. The meadows have a rich and diverse flora, dominated by greater pond sedge in wetter areas, while there are plants such as purple moor-grass and meadow foxtail in drier parts.[231]
Mottisfont Bats Mottisfont Bats Green tickY 196.7 hectares
(486 acres)[232] 		PP Romsey
51°03′04″N 1°33′18″W / 51.051°N 1.555°W / 51.051; -1.555 (Mottisfont Bats)
SU 313 280[232] 		SAC[233] Map Citation These woods have a nationally important population of the rare barbastelle bat. It is one of only six breeding sites in Britain. Eight other bat species have been recorded at Mottisfont: whiskered, brown long-eared, common and soprano Pipistrelles, serotine, noctule, Daubenton's and Natterer's.[234]
New Forest New Forest Green tickY Green tickY 28,924.5 hectares
(71,474 acres)[235] 		PP Lyndhurst
50°51′50″N 1°37′08″W / 50.864°N 1.619°W / 50.864; -1.619 (New Forest)
SU 269 072[235] 		GCR,[236][237][238][239][240] HIWWT,[241] NCR,[242] NNR,[243] NT,[244] SAC,[245] Ramsar,[129][212] SPA[130][213] Map[f] Citation The New Forest has the largest area of wild vegetation in lowland England, and it is large enough to ensure the long-term survival of fauna and flora, including many rare species. Habitats include heath, mire, fen, pasture woodland and bog woodland. There are seven important geological sites dating to the Cenozoic, including gravels rich in Paleolithic artefacts.[246]
Noar Hill Noar Hill Green tickY 63.0 hectares
(156 acres)[247] 		PP Alton
51°04′48″N 0°56′28″W / 51.080°N 0.941°W / 51.080; -0.941 (Noar Hill)
SU 743 317[247] 		HIWWT,[248] NCR,[249] SAC[98] Map Citation The hill has a variety of chalk habitats, including grassland over ancient quarries, mature beech woodland, scrub and hazel coppice. The site is nationally important for butterflies and grasshoppers. Forty species of butterfly have been recorded, including the declining Duke of Burgundy and brown hairstreak.[250]
Norley Copse and Meadow Norley Copse and Meadow Green tickY 7.5 hectares
(19 acres)[251] 		NO Lymington
50°46′44″N 1°29′13″W / 50.779°N 1.487°W / 50.779; -1.487 (Norley Copse and Meadow)
SZ 363 978[251] 		Ramsar,[212] SPA[213] Map Citation The Crockford Stream runs through this site, which has old oak woodland with hazel coppice and unimproved grassland which is managed by grazing. The meadow has 140 species of higher plants and it is also rich in invertebrates, including eight species of dragonfly and a rare picture-winged fly, Sphenella marginata.[252]
North Solent North Solent Green tickY Green tickY 1,186.6 hectares
(2,932 acres)[253] 		PP Southampton
50°47′31″N 1°23′46″W / 50.792°N 1.396°W / 50.792; -1.396 (North Solent)
SZ 427 993[253] 		GCR,[254][255] LNR,[256] NCR,[257] NNR[177] Ramsar,[129] SAC,[90] SPA[130] Map Citation This site has diverse habitats, including mudflats, saltmarshes, beaches, marshes, grassland and woods. It has rich insect populations and is of international importance for its wintering and migratory wildfowl and waders. Stone Point is important for studies of Quaternary stratigraphy, and it has many fossils dating to the Eemian interglacial, around 120,000 years ago.[258]
Odiham Common with Bagwell Green and Shaw Odiham Common Green tickY 133.8 hectares
(331 acres)[259] 		PP Hook
51°16′08″N 0°55′19″W / 51.269°N 0.922°W / 51.269; -0.922 (Odiham Common with Bagwell Green and Shaw)
SU 753 528[259] 		Map Citation Odiham Common was used for hunting by Edward the Confessor and is now wood pasture. Dead wood provides a habitat for nationally rare flies. There are also areas of dry grassland, which has rare solitary bees and wasps, and of marshy grassland.[260]
Old Burghclere Lime Quarry Green tickY 4.5 hectares
(11 acres)[261] 		Newbury
51°18′47″N 1°19′34″W / 51.313°N 1.326°W / 51.313; -1.326 (Old Burghclere Lime Quarry)
SU 471 573[261] 		HIWWT[136] Map Citation
Old Winchester Hill Old Winchester Hill Green tickY 66.2 hectares
(164 acres)[262] 		YES Petersfield
50°58′59″N 1°05′13″W / 50.983°N 1.087°W / 50.983; -1.087 (Old Winchester Hill)
SU 642 208[262] 		NCR,[263] NNR,[264] SM[265] Map Citation The south slope of this Iron Age hillfort is one of the richest botanical sites in southern England, including the largest population of round-headed rampion in Britain. Other plants include greater butterfly-orchids, yellow-worts, autumn lady's-tresses, and 5% of the juniper trees in southern England.[266]
Pamber Forest and Silchester Common Pamber Forest Green tickY 341.7 hectares
(844 acres)[267] 		YES Tadley
51°20′49″N 1°07′01″W / 51.347°N 1.117°W / 51.347; -1.117 (Pamber Forest and Silchester Common)
SU 616 612[267] 		HIWWT,[268] LNR[269] Map Citation Pamber Forest has hazel coppice dominated by oak standards. At the southern end are plants associated with ancient woodland, such as orpine, wood horsetail, lily of the valley, wild daffodil and the rare mountain fern. The woodland has over forty nationally rare or uncommon species.[270]
Peake Wood Peake Wood Green tickY 17.7 hectares
(44 acres)[271] 		NO East Meon
50°59′24″N 1°05′28″W / 50.990°N 1.091°W / 50.990; -1.091 (Peake Wood)
SU 639 216[271] 		Map Citation This is a prime example of a hazel and ash wood on calcareous soils. There is also a variety of other trees and a rich herb layer, which is dominated by bluebell and dog's mercury. Other plants include the rare star-of-Bethlehem and fly orchid.[272]
Poors Common Green tickY 47.4 hectares
(117 acres)[273] 		Bransgore
50°47′06″N 1°43′05″W / 50.785°N 1.718°W / 50.785; -1.718 (Poors Common)
SZ 200 984[273] 		Map Citation
Porton Down Porton Down Green tickY 1,559.0 hectares
(3,852 acres)[274] 		PP Salisbury
51°07′52″N 1°40′08″W / 51.131°N 1.669°W / 51.131; -1.669 (Porton Down)
SU 233 369[274] 		NCR,[275] SAC,[276] SPA[277] Map[f] Citation This is one of the largest areas of semi-natural chalk grassland in the country. It has also been designated an SSSI because of its important populations of lichens, vascular plants and invertebrates, and for its breeding stone curlews. There are also areas of scrub and woodland.[278]
Portsdown Portsdown Green tickY 69.1 hectares
(171 acres)[279] 		YES Portsmouth
50°51′14″N 1°05′31″W / 50.854°N 1.092°W / 50.854; -1.092 (Portsdown)
SU 640 065[279] 		Map Citation This is a linear south-facing escarpment with a rich chalk grassland flora. The diverse insect fauna includes all the chalk downland butterflies and a population of the largest British bush cricket, Tettigonia viridissima. On the lower slopes, raised beaches indicate former sea levels.[280]
Portsmouth Harbour Portsmouth Harbour Green tickY 1,264.2 hectares
(3,124 acres)[281] 		PP Portsmouth
50°49′37″N 1°07′30″W / 50.827°N 1.125°W / 50.827; -1.125 (Portsmouth Harbour)
SU 617 034[281] 		Ramsar,[282] SPA[283] Map Citation Most of the harbour is composed of intertidal mudflats and cordgrass marshes, and they have abundant benthic fauna which provide food for birds. It is of national importance for dark-bellied Brent geese and for three species of waders, grey plover, black-tailed godwit and dunlin.[284]
Quarley Hill Fort Quarley Hill Fort Green tickY 3.5 hectares
(8.6 acres)[285] 		NO Andover
51°10′48″N 1°37′37″W / 51.180°N 1.627°W / 51.180; -1.627 (Quarley Hill Fort)
SU 262 424[285] 		SM[286] Map Citation This site on the land surrounding the Iron Age hill fort on Quarley Hill has chalk grassland which is maintained by cattle grazing. It is rich in herbs, such as felwort, small scabious, dropwort, chalk milkwort, greater butterfly-orchid and bastard toadflax.[287]
Ratlake Meadows Ratlake Meadows Green tickY 4.2 hectares
(10 acres)[288] 		NO Winchester
51°00′36″N 1°24′40″W / 51.010°N 1.411°W / 51.010; -1.411 (Ratlake Meadows)
SU 414 236[288] 		Map Citation These unimproved meadows on London Clay are recorded back to the sixteenth century and are probably much older. They are dominated by sweet vernal grass, heath grass, tufted hairgrass and Yorkshire fog, and have a rich variety of herbs. Invertebrates include the rare bush cricket, long-winged conehead.[289]
River Avon System River Avon System Green tickY 475.9 hectares
(1,176 acres)[290] 		PP Salisbury
51°01′30″N 1°49′19″W / 51.025°N 1.822°W / 51.025; -1.822 (River Avon System)
SU 126 251[290] 		NCR,[291] Ramsar,[11][212] SPA[13][213] Map[f] Citation This site comprises stretches of the River Avon and its tributaries, which are described by Natural England as "of national and international importance for their wildlife communities". It has more than 180 species of aquatic plants and one of the most diverse fish species in the country. There is also a rich invertebrate fauna and mammals include water voles and water shrews.[292]
River Itchen River Itchen Green tickY 748.5 hectares
(1,850 acres)[293] 		PP Winchester
51°01′55″N 1°17′38″W / 51.032°N 1.294°W / 51.032; -1.294 (River Itchen)
SU 496 261[293] 		HIWWT,[294] SAC[295] Map Citation The SSSI covers the river and its banks, with fen, flood meadows, wet woodland and swamp. It has populations of the nationally rare southern damselfly and white-clawed crayfish. Other fauna include otters, water voles, Atlantic salmon, shovelers and Cetti's warblers.[296]
River Test River Test Green tickY 438.0 hectares
(1,082 acres)[297] 		PP Stockbridge
51°07′05″N 1°27′11″W / 51.118°N 1.453°W / 51.118; -1.453 (River Test)
SU 384 355[297] 		Ramsar,[129] SPA[130] Map Citation This chalk stream has one of the richest fauna and flora of any lowland river in England. More than 100 species of flowering plant have been recorded along its banks and 232 invertebrate taxa in the river. It is also important for wetland birds, with breeding species including kingfishers, grey wagtails and little grebes.[298]
Ron Ward's Meadow with Tadley Pastures Green tickY 11.5 hectares
(28 acres)[299] 		Tadley
51°20′28″N 1°08′20″W / 51.341°N 1.139°W / 51.341; -1.139 (Ron Ward's Meadow with Tadley Pastures)
SU 601 606[299] 		HIWWT[300] Map Citation
Roydon Woods Roydon Woods Green tickY 294.9 hectares
(729 acres)[301] 		YES Lymington
50°48′14″N 1°33′07″W / 50.804°N 1.552°W / 50.804; -1.552 (Roydon Woods)
SU 317 006[301] 		HIWWT[302] SAC[245] Map Citation A large part of these woods are ancient, but other areas are former oak and hazel coppice planted in the nineteenth century. There are also areas of hornbeam and species-rich aldercarr. The SSSI also includes a stretch of the Lymington River and many open glades.[303]
Rushmore and Conholt Downs Rushmore Down Green tickY 111.5 hectares
(276 acres)[304] 		NO Andover
51°17′24″N 1°30′36″W / 51.290°N 1.510°W / 51.290; -1.510 (Rushmore and Conholt Downs)
SU 343 546[304] 		NCR[61] Map Citation These chalk downs have areas of grassland and scrub. There is also woodland, which is dominated by oak and ash with hazel coppice. A stand of juniper trees is over a hundred years old, and it is thought to be the oldest on chalk in England, with some trees over 6 metres (20 feet) tall.[305]
Selborne Common Selborne Common Green tickY 99.8 hectares
(247 acres)[306] 		YES Alton
51°05′35″N 0°57′18″W / 51.093°N 0.955°W / 51.093; -0.955 (Selborne Common)
SU 733 331[306] 		NCR,[307] NT[308] SAC[98] Map Citation Most of this site is woodland which is dominated by beech trees, but there is a small area of species-rich grassland. It is a nationally important site for molluscs with at least 41 species. There are about 30 species of butterfly, including brown hairstreak and silver-washed fritillary.[309]
Shortheath Common Shortheath Common Green tickY 59.5 hectares
(147 acres)[310] 		YES Bordon
51°07′26″N 0°53′38″W / 51.124°N 0.894°W / 51.124; -0.894 (Shortheath Common)
SU 775 367[310] 		LNR,[311] SAC[312] Map Citation The common has areas of bracken, woodland, heath and a pond, but its main ecological interest is a large valley mire. Much of it is covered by Sphagnum mosses, but there are also many vascular plants, such as velvet bent and the insectivorous round-leaved sundew. The invertebrates are also of particular interest, including 23 breeding species of dragonfly.[313]
Sidley Wood Sidley Wood Green tickY 11.7 hectares
(29 acres)[314] 		FP Andover
51°17′49″N 1°25′19″W / 51.297°N 1.422°W / 51.297; -1.422 (Sidley Wood)
SU 404 555[314] 		Map Citation This south-facing secondary wood on chalk soil has many stands of ancient hornbeam coppice, some of more than 2 metres (6.6 feet) in diameter; no other comparable stands are known in south central England. Other trees are oak, field maple, ash and hazel.[315]
Sinah Common Sinah Common Green tickY 243.0 hectares
(600 acres)[316] 		PP Hayling Island
50°47′02″N 1°00′40″W / 50.784°N 1.011°W / 50.784; -1.011 (Sinah Common)
SZ 698 987[316] 		Map Citation This coastal site has maritime shingle grassland, some of which is rich in lichens, sand dunes, heath and saltmarsh. It has also been designated an SSSI because of its population of the endangered flowering plant childing pink at one of only two sites in Britain, and for its outstanding assemblage of other nationally scarce plants. There are also populations of nationally rare and scarce invertebrates.[317]
Southampton Common Southampton Common Green tickY 90.3 hectares
(223 acres)[318] 		YES Southampton
50°55′44″N 1°24′43″W / 50.929°N 1.412°W / 50.929; -1.412 (Southampton Common)
SU 414 146[318] 		Map Citation The main ecological importance of this public park lies in its many amphibians, including one of the largest British populations of the nationally rare great crested newt. The common also has the two other species of newts native to Britain, palmate and smooth. The newts live in the lakes and ditches on the common and use the ditches to migrate to hibernating sites.[319]
Sowley Pond Sowley Pond Green tickY 49.3 hectares
(122 acres)[320] 		NO Lymington
50°46′12″N 1°28′12″W / 50.770°N 1.470°W / 50.770; -1.470 (Sowley Pond)
SZ 375 968[320] 		Ramsar,[129] SPA[130] Map Citation The pond was formed in the fourteenth century by damming a stream, and in the seventeenth century became a hammer pond for an ironworks. It is a refuge for ducks feeding on the surface and by diving, and it is surrounded by woods which have the largest heronry in the county.[321]
St Catherine's Hill t Catherine's Hill Green tickY 43.0 hectares
(106 acres)[322] 		YES Winchester
51°02′38″N 1°18′36″W / 51.044°N 1.310°W / 51.044; -1.310 (St Catherine's Hill)
SU 485 274[322] 		HIWWT,[323] SM[324] Map Citation This hill is covered by chalk grassland scrub and surrounded by the ramparts of an Iron Age hillfort. It has a rich herb flora, including thyme, common rock-rose, carline thistle, felwort, fairy flax and frog orchid. Sheltered areas are rich in invertebrates.[325]
Stockbridge Common Marsh Stockbridge Common Marsh Green tickY 64.8 hectares
(160 acres)[326] 		YES Stockbridge, Hampshire
51°06′07″N 1°29′56″W / 51.102°N 1.499°W / 51.102; -1.499 (Stockbridge Common Marsh)
SU 352 338[326] 		NT[327] Map Citation This site stretches for 2 kilometres (1.2 miles) along the flood plain of the River Test. It has wetland habitats including marsh, fen, carr, alluvial meadows and a large shallow lake. The marsh has a rich variety of flora, with 180 species of flowering plants, including bog pimpernel, adder’s-tongue fern, marsh valerian and bogbean.[328]
Stockbridge Down Stockbridge Down Green tickY 69.8 hectares
(172 acres)[329] 		YES Stockbridge, Hampshire
51°06′43″N 1°27′36″W / 51.112°N 1.460°W / 51.112; -1.460 (Stockbridge Down)
SU 379 349[329] 		NCR,[330] NT,[331] SM[332] Map Citation This site has a variety of scrub and grassland habitats on a north-west facing slope of chalk and a clay-with-flints plateau. There is a diverse range of butterflies, such as chalk-hill blue, marbled white and dark green fritillary, while moths include the oblique striped.[333]
Stockbridge Fen Green tickY 6.0 hectares
(15 acres)[334] 		Stockbridge, Hampshire
51°06′58″N 1°29′56″W / 51.116°N 1.499°W / 51.116; -1.499 (Stockbridge Fen)
SU 358 353[334] 		NCR[334] Map Citation
Titchfield Haven Titchfield Haven Green tickY 134.5 hectares
(332 acres)[335] 		PP Fareham
50°49′37″N 1°14′17″W / 50.827°N 1.238°W / 50.827; -1.238 (Titchfield Haven)
SU 538 033[335] 		LNR,[336] NNR,[337] Ramsar,[129] SPA[130] Map Citation This was formerly a tidal estuary, but one way valves block salt water and it is now freshwater river and marshes, wet meadows bisected by ditches, and fen. It is important for wetland breeding birds, such as bearded reedlings, sedge warblers and reed warblers.[338]
Toyd Down and Quarry Toyd Down Green tickY 6.7 hectares
(17 acres)[339] 		PP Fordingbridge
50°58′16″N 1°53′13″W / 50.971°N 1.887°W / 50.971; -1.887 (Toyd Down and Quarry)
SU 080 191[339] 		Map Citation This site is composed of two parts. Toyd Down is well developed grassland, while the quarry was worked until about 1970. This makes the site a good subject for studying the colonisation of bare chalk next to a mature species-rich meadow. Among the early cononisers are basil thyme, carline thistle and mouse-ear hawkweed.[340]
Trodds Copse Green tickY 26.0 hectares
(64 acres)[341] 		Romsey
50°59′56″N 1°24′22″W / 50.999°N 1.406°W / 50.999; -1.406 (Trodds Copse)
SU 418 224[341] 		Map Citation
Upper Greensand Hangers: Empshott to Hawkley Upper Greensand Hangers: Empshott to Hawkley Green tickY 37.7 hectares
(93 acres)[342] 		PP Liss
51°04′01″N 0°55′30″W / 51.067°N 0.925°W / 51.067; -0.925 (Upper Greensand Hangers: Empshott to Hawkley)
SU 754 303[342] 		SAC[98] Map Citation This site comprises a number of woods along steep rocky slopes in the Upper Greensand. These conditions produce unusual lime-rich woodlands and specialised mosses and liverworts on the rocks. The dominant tree is ash, which has often been coppiced. The ground flora is diverse, including plants such as dog's mercury and yellow archangel.[343]
Upper Greensand Hangers: Wyck to Wheatley Upper Greensand Hangers: Wyck to Wheatley Green tickY 13.2 hectares
(33 acres)[344] 		PP Bordon
51°09′00″N 0°53′35″W / 51.150°N 0.893°W / 51.150; -0.893 (Upper Greensand Hangers: Wyck to Wheatley)
SU 775 395[344] 		SAC[98] Map Citation This site is composed of woods on the steep rocky slopes of the Upper Greensand. Bare rocks are covered by lime-loving bryophytes such as Tortula marginata, Chiloscyphus pallescens and Fissidens gracilifolius. There is also a population of the nationally scarce mollusc Macrogastra rolphii.[345]
Upper Hamble Estuary and Woods Upper Hamble Estuary and Woods Green tickY 151.2 hectares
(374 acres)[346] 		PP Southampton
50°53′49″N 1°16′48″W / 50.897°N 1.280°W / 50.897; -1.280 (Upper Hamble Estuary and Woods)
SU 507 111[346] 		LNR,[347] Ramsar,[129] SAC,[90] SPA[130] Map Citation This site comprises the upper estuary of the River Hamble, together with adjoining saltmarsh, reedswamp and ancient semi-natural woodland. The woods have a diverse ground flora and invertebrate fauna. There is also a narrow zone of mudflats, with large numbers of marine worms, crustaceans and molluscs, which provide food for birds.[348]
Waltham Chase Meadows Green tickY 6.4 hectares
(16 acres)[349] 		Southampton
50°55′52″N 1°11′56″W / 50.931°N 1.199°W / 50.931; -1.199 (Waltham Chase Meadows)
SU 564 149[349] 		Map Citation
Warblington Meadow arblington Meadow Green tickY 3.9 hectares
(9.6 acres)[350] 		NO Havant
50°50′31″N 0°57′58″W / 50.842°N 0.966°W / 50.842; -0.966 (Warblington Meadow)
SU 729 052[350] 		Map Citation This site has areas of fresh and salt water marshes. It has a rich flora, with 158 species of flowering plants recorded, including marsh arrow-grass, ragged robin, creeping jenny, corky-fruited water-dropwort, bog pimpernel and southern marsh orchid. There is also a small unpolluted brook lined with trees.[351]
Warnborough Green Warnborough Green Green tickY 4.4 hectares
(11 acres)[352] 		YES Hook
51°15′47″N 0°57′25″W / 51.263°N 0.957°W / 51.263; -0.957 (Warnborough Green)
SU 729 520[352] 		HIWWT[353] Map Citation This site consists of two species-rich wet meadows on either side of the River Whitewater. There are thirteen species of sedge, such as distant, flea and brown sedge. Invertebrates include two nationally rare flies, the soldier fly Stratiomys potamida and the hoverfly Xylota abiens.[354]
Wealden Edge Hangers Wealden Edge Hangers Green tickY 222.2 hectares
(549 acres)