Tytherington Down

Site of Special Scientific Interest · 51.1459, -2.1270

Condition (Natural England)

Favourable (1)
UnitFeatureConditionArea (ha)Assessed
ST912385 Favourable 5.66 2012-07-31

Geology & landscape

Rock Type: Chalk

Description

Area, 5.9 ha. 14.6 ac. Description The site is a botanically rich example of a well grazed grassland and is dominated by the dwarf sedge sheep's fescue Carex humilis Festuca ovina community type. It spans a dry valley, orientated north south and situated to the south of the Wylye Valley. Dwarf sedge is abundant on the steep valley sides, occurring on both the west facing and, more unusually, on the east facing slopes. More than 20 species of grass have been recorded from the site, with hairy oat grass Avenula pubescens, meadow oat grass Avenula pratensis, quaking grass Briza media and crested hairgrass Koeleria macrantha conspicuous. The turf is rich in herbs, with species characteristic of the S W Wiltshire chalk abundant. These include saw wort Serratula tinctoria, betony Betonica officinalis, devil's bit scabious Succisa pratensis, yellow rattle Rhinanthus minor and dyer's greenweed Genista tinctoria. Less common plants include frog orchid Dactylorhiza viridis, bastard toadflax Thesium humifusum and the parasite dodder Cuscuta epithymum. A small colony of the nationally rare tuberous thistle Cirsium tuberosum also occurs. Within great Britain, this plant is almost entirely restricted to Wiltshire. The invertebrate interest of the site has not been well surveyed. Nevertheless, the scarce plant bug Canthophorus impressus, which feeds on bastard toadflax, has been found. Ant hills, constructed by the yellow meadow ant Lasius flavus, are conspicuous over part of the downland. Most of the site is well grazed by cattle and is consequently almost free from scrub although hawthorn Crataegus monogyna and gorse Ulex europaeus occur at the north of the site.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
yellow meadow ant Lasius flavus Not listed in GB list ant formicinae
bastard toadflax bug Canthophorus impressus LC bug cydnidae
meadow oat grass Avenula pratensis Not listed in GB list grass poaceae
downy oat grass Avenula pubescens LC grass poaceae
quaking grass Briza media VU grass poaceae
sheep's fescue Festuca ovina LC grass poaceae
crested hair-grass Koeleria macrantha NT grass poaceae
betony Betonica officinalis VU herb lamiaceae
tuberous thistle Cirsium tuberosum VU herb asteraceae
common dodder Cuscuta epithymum LC herb convolvulaceae
frog orchid Dactylorhiza viridis VU herb orchidaceae
dyer's greenweed Genista tinctoria LC herb fabaceae
yellow-rattle Rhinanthus minor DD herb orobanchaceae
saw wort Serratula tinctoria VU herb asteraceae
devils-bit scabious Succisa pratensis VU herb caprifoliaceae
bastard toadflax Thesium humifusum VU herb santalaceae
dwarf sedge Carex humilis LC sedge cyperaceae
hawthorn Crataegus monogyna LC shrub rosaceae
gorse Ulex europaeus LC shrub leguminosae

Plant communities

W20 — Montane scrub

Salix lapponum-Luzula sylvatica scrub

Salix arbuscula, Salix cinerea, Salix lapponum, Salix myrsinites, Salix phylicifolia, Salix reticulata, Empetrum nigrum, Calluna vulgaris, Salix lanata, Vaccinium myrtillus, Vaccinium uliginosum, Carex atrata, Carex bigelowii, Carex binervis, Carex flacca, Luzula multiflora, Luzula sylvatica, Huperzia selago, Selaginella selaginoides, Aulacomnium palustre, Mnium hornum, Philonotis fontana, Plagiomnium undulatum, Rhizomnium punctatum, Dicranum bonjeanii, Dicranum majus, Dicranum scoparium, Fissidens adianthoides, Racomitrium lanuginosum, Calliergonell cuspidatum, Ctenidium molluscum, Hylocomium splendens, Hypnum callichroum, Hypnum cupressiforme, Palustriella commutatum, Plagiothecium denticulatum, Plagiothecium undulatum, Pleurozium schreberi, Ptilium crista-castrensis, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Sanionia uncinata, Scorpidium revolvens, Thuidium tamariscinum, Atrichum undulatum, Polytrichastrum alpinum, Sphagnum capillifolium, Sphagnum fallax, Sphagnum girgensohnii, Sphagnum palustre, Sphagnum russowii, Sphagnum squarrosum, Sphagnum subnitens, Sphagnum teres, Barbilophozia barbata, Chiloscyphus polyanthos, Diplophyllum albicans, Lophocolea bidentata, Plagiochila porelloides, Ptilidium ciliare, Scapania undulata, Cladonia squamosa, Peltigera canina, Angelica sylvestris, Caltha palustris, Hieraclium spp., Saussurea alpina, Solidago virgaurea, Campanula rotundifolia, Succisa pratensis, Valeriana officinalis, Rhodiola rosea, Vaccinium vitis-idaea, Thymus praecox, Epilobium anagallidifolium, Dactylorhiza viridis, Euphrasia officinalis, Rhinanthus minor, Oxalis acetosella, Oxyria digyna, Polygonum viviparum, Rumex acetosa, Anemone nemorosa, Ranunculus acris, Thalictrum alpinum, Alchemilla alpina, Alchemilla glabra, Filipendula ulmaria, Geum rivale, Galium boreale, Galium saxatile, Saxifraga aizoides, Saxifraga hypnoides, Saxifraga oppositifolia, Saxifraga stellaris, Viola riviniana, Agrostis canina, Agrostis capillaris, Anthoxanthum odoratum, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Nardus stricta, Dryopteris dilatata, Phegopteris connectilis

W21 — Hedgerow scrub, Mixed scrub

Crataegus monogyna-Hedera helix scrub

Hedera helix, Salix cinerea, Acer pseudoplatanus, Ilex aquifolium, Betula pendula, Corylus avellana, Fagus sylvatica, Quercus robur, Fraxinus excelsior, Malus sylvestris, Sorbus aria, Taxus baccata, Ulmus glabra, Ulmus procera, Sambucus nigra, Viburnum lantana, Euonymus europaeus, Cornus sanguinea, Juniperus communis, Ligustrum vulgare, Clematis vitalba, Rhamnus cathartica, Crataegus laevigata, Crataegus monogyna, Prunus spinosa, Juncus effusus, Plagiomnium undulatum, Brachythecium rutabulum, Kindbergia praelonga, Rhynchostegium confertum, Tamus communis, Heracleum sphondylium, Torilis japonica, Arum maculatum, Arctium minus, Cirsium arvense, Lonicera periclymenum, Moehringia trinervia, Silene dioica, Stellaria graminea, Stellaria holostea, Stellaria media agg., Calystegia sepium, Mercurialis perennis, Geranium robertianum, Iris foetidissima, Glechoma hederacea, Lamium purpureum, Origanum vulgare, Stachys sylvatica, Teucrium scorodonia, Allium ursinum, Hyacinthoides non-scripta, Circaea lutetiana, Rumex sanguineus, Anemone nemorosa, Ranunculus repens, Fragaria vesca, Geum urbanum, Potentilla sterilis, Poterium sanguisorba, Rosa arvensis, Rosa canina, Rubia peregrina, Rubus fruticosus agg., Galium aparine, Urtica dioica, Viola riviniana, Anisantha sterilis, Arrhenatherum elatius, Brachypodium pinnatum, Brachypodium sylvaticum, Bromopsis erecta, Dactylis glomerata, Elytrigia repens, Holcus lanatus, Holcus mollis, Poa trivialis, Asplenium scolopendrium, Pteridium aquilinum, Dryopteris filix-mas

W22 — Hedgerow scrub, Mixed scrub

Prunus spinosa-Rubus fruticosus scrub

Hedera helix, Acer campestre, Corylus avellana, Ulex europaeus, Prunus spinosa, Plagiomnium undulatum, Brachythecium rutabulum, Eurhynchium striatum, Kindbergia praelonga, Thuidium tamariscinum, Atrichum undulatum, Lophocolea bidentata, Achillea millefolium, Cardamine flexuosa, Lonicera periclymenum, Moehringia trinervia, Silene dioica, Silene uniflora, Stellaria media agg., Mercurialis perennis, Geranium robertianum, Stachys sylvatica, Teucrium scorodonia, Hyacinthoides non-scripta, Oxalis acetosella, Digitalis purpurea, Plantago lanceolata, Veronica chamaedrys, Armeria maritima, Rumex acetosa, Filipendula ulmaria, Geum urbanum, Rosa canina, Rubus fruticosus agg., Rubus idaeus, Galium aparine, Urtica dioica, Viola riviniana, Agrostis capillaris, Brachypodium sylvaticum, Dactylis glomerata, Festuca rubra, Holcus lanatus, Holcus mollis, Poa trivialis, Asplenium scolopendrium, Pteridium aquilinum, Dryopteris borreri, Dryopteris filix-mas