Grays Thurrock Chalk Pit

Site of Special Scientific Interest · 51.4863, 0.3162

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Essex County

Condition (Natural England)

Unfavourable Recovering (2)
UnitFeatureConditionArea (ha)Assessed
TQ609788 — Unfavourable Recovering 14.92 2023-03-28
TQ610790 — Unfavourable Recovering 2.33 2023-03-28

Habitats

Fast flowing river and stream, Mixed scrub, Montane scrub, Upland calcareous grassland

Geology & landscape

Mining / Industrial: Quarry · Rock Type: Chalk, Limestone

Description

Area,17.27 hectares 42.67 ac Description Grays Thurrock Chalk Pit is situated in the S W of Essex. Active mineral extraction ceased in the early 1920s and since that time natural colonisation of the pit bottom has created a range of woodland, scrub and calcareous grassland habitats that are important for the assemblage of invertebrate fauna they support The disused chalk pit lies about one mile north of the River Thames and two miles north east of the Dartford river crossings. Old records show that 25 hectares of the quarry were excavated by 1860 and this had extended to about 40 hectares when operations ceased shortly after the First World War in the early 1920s. The revegetation of the disused quarry represents the succession from bare chalk, through open grassland, scrub and young woodland to old woodland areas. The principal components of the scrub area, which is the most abundant habitat, are birch Betula pendula and Betula pubescens with ash Fraxinus excelsior, sycamore Acer pseudoplatanus and oaks Quercus petraea and Quercus robur. Shrubs include hawthorn Crataegus monogyna, spindle Euomymus europaeus and dogwood Cornus sanguinea. The ground flora is dominated by ivy Hedera helix. The areas of open grassland lie predominantly in the northern part of the site with rides and small clearings cut through the dense areas of scrub. There is an area of open water in the north east corner of the pit where the floor of the quarry dips below the water table. The range of species within the following phylogenetic orders is an important feature, beetles Coleoptera, moths and butterflies Lepidoptera and true flies Diptera. The beetle fauna is found in the full range of habitats across the site. Mordellistena humeralis and M. neuwaldeggiana are two Red Data Book RDB species that are thought to develop in rotting wood whilst the RDB beetle Crococephalus sexpunctatus is associated with hazel, birch, aspen or crack willow. The other twenty notable species include Kalcapion semivittatum, a small weevil associated with ruderal habitats; Squamapion flavimanum, another weevil but associated with calcareous grassland or field margins and a water beetle Hydroporus marginatus, a southern species which is usually found in chalk and limestone streams. The flea beetle Podagrica fuscipes share the same host plant as the micro moth larvae of Digitivalva perlepidella, P. fuscipes larvae developing at the roots of plants whilst the larvae of the moth D. perlepidella feed on the flowers and seeds of Malva sylvestris. Other moths include the RDB species Dahlica triquetrella and currently 27 other notable species. The four RDB true flies include Dicranoptycha fuscescens, a cranefly discovered in this country in the 1970s and so far only recorded from Kent and Essex. The life cycle of this cranefly is unknown but on the continent this species is associated with dry scrub and woodland. Zodion cinereum larvae are probably parasitoids of certain solitary bees, though again, the precise hosts are unknown. The two other RDB true flies are Chrysotus verralli and Platypalpus niveiseta. There are presently a further 11 notable true flies recorded recently from the site. The assemblage of invertebrate fauna mean this site has the best concentration and diversity of calcareous invertebrate fauna in Essex. Some species, such as the notable spider Centromerus serratus and locally important spider Entelecara flavipes are found nowhere else in Essex. The site is also noted for its flora which includes the largest populations of round leaved wintergreen Pyrola rotundifolia and man orchid Orchis anthorpophora in Essex.

Species mentioned

English name
search for this in other sites		 Latin name
search with Google		 IUCN / Red List Type Family
weevil Kalcapion semivittatum Not listed in GB list beetle apionidae
no common name Mordellistena humeralis LC beetle mordellidae
weevil Squamapion flavimanum Not listed in GB list beetle apionidae
six spotted beetle Crococephalus sexpunctatus Not listed in GB list beetle leaf chrysomelidae
fly Chrysotus verralli DD fly dolichopodidae
fly Dicranoptycha fuscescens Not listed in GB list fly limoniidae
fly Zodion cinereum Not listed in GB list fly conopidae
common mallow Malva sylvestris LC herb malvaceae
man orchid Orchis anthorpophora Not listed in GB list herb orchidaceae
round leaved wintergreens Pyrola rotundifolia VU herb ericaceae
no common name Dahlica triquetrella Not listed in GB list moth psychidae
no common name Digitivalva perlepidella Not listed in GB list moth glyphipterigidae
dogwood Cornus sanguinea LC shrub cornaceae
hawthorn Crataegus monogyna LC shrub rosaceae
spider Centromerus serratus EN spider linyphiidae
spider Entelecara flavipes LC spider linyphiidae
sycamore Acer pseudoplatanus Not listed in GB list tree aceraceae
birch Betula pendula LC tree betulaceae
downy birch Betula pubescens LC tree betulaceae
ash Fraxinus excelsior LC tree oleaceae
sessile or durmast oak Quercus petraea LC tree fagaceae
common oak Quercus robur LC tree fagaceae
ivy Hedera helix LC woody climber araliaceae

Plant communities

A9 — Fast flowing river and stream, Marginal and inundation, Pond ditch and canal, Sluggish river and stream

Potamogeton natans community

Schoenoplectus lacustris, Juncus bulbosus, Sparganium angustifolium, Sparganium erectum, Sparganium minimum, Alisma plantago-aquatica, Lobelia dortmanna, Equisetum fluviatile, Myriophyllum alterniflorum, Elodea canadensis, Lemna minor, Lemna trisulca, Nymphaea alba, Callitriche platycarpa, Callitriche stagnalis, Littorella uniflora, Potamogeton natans, Ranunculus trichophyllus, Glyceria fluitans, Chara subspinosa

A14 — Fast flowing river and stream

Myriophyllum alterniflorum community

Isolepis fluitans, Juncus bulbosus, Fontinalis antipyretica, Lobelia dortmanna, Equisetum fluviatile, Myriophyllum alterniflorum, Lemna minor, Callitriche stagnalis, Littorella uniflora, Potamogeton filiformis, Potamogeton gramineus, Potamogeton natans, Ranunculus peltatus, Chara spp., Nitella hyalina

A17 — Chalk river and stream, Fast flowing river and stream

Ranunculus penicillatus ssp. pseudofluitans community

Berula erecta, Nasturtium officinale, Elodea canadensis, Lemna minor, Callitriche stagnalis, Veronica beccabunga, Polygonum amphibium, Polygonum hydropiper, Potamogeton crispus, Potamogeton pectinatus, Ranunculus penicillatus ssp. pseudofluitans

A18 — Fast flowing river and stream

Ranunculus fluitans community

Fontinalis antipyretica, Fontinalis squamosa var. curnowii, Myriophyllum alterniflorum, Myriophyllum spicatum, Elodea canadensis, Mentha aquatica, Lemna gibba, Lemna minor, Potamogeton perfoliatus, Ranunculus fluitans, Glyceria fluitans, Phalaris arundinacea

CG9 — Limestone pavement, Lowland calcareous grassland, Upland calcareous grassland

Sesleria albicans-Galium sterneri grassland

Empetrum nigrum subsp.nigrum, Calluna vulgaris, Carex capillaris, Carex caryophyllea, Carex eragrostis, Carex flacca, Carex hostiana, Carex panicea, Carex pulicaris, Kobresia simpliciuscula, Selaginella selaginoides, Rhodobryum roseum, Dicranum scoparium, Ditrichum flexicaule, Fissidens dubius, Encalypta streptocarpa, Racomitrium canescens sens.lat., Racomitrium lanuginosum, Ctenidium molluscum, Homalothecium lutescens, Hylocomium splendens, Hypnum cupressiforme, Neckera crispa, Pseudoscleropodium purum, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Rhytidium rugosum, Thuidium tamariscinum, Polytrichum juniperinum, Tortella tortuosa, Barbilophozia barbata, Blepharostoma trichophyllum, Frullania tamarisci, Lophocolea bidentata, Plagiochila asplenioides, Scapania aspera, Tritomaria quinquedentata, Cetraria islandica, Cladonia pocillum, Cladonia rangiformis, Cornicularia aculeata, Pimpinella saxifraga, Achillea millefolium, Antennaria dioica, Bellis perennis, Carlina vulgaris, Cirsium vulgare, Leontodon hispidus, Pilosella officinarum, Taraxacum officianalis, Myosotis alpestris, Cochlearia alpina, Draba incana, Campanula rotundifolia, Scabiosa columbaria, Succisa pratensis, Cerastium fontanum, Minuartia verna, Parnassia palustris, Helianthemum oelandicum icanum, Sedum acre, Anthyllis vulneraria, Hippocrepis comosa, Lotus corniculatus, Trifolium repens, Gentiana verna, Gentianella amarella, Hypericum pulchrum, Thymus praecox, Pinguicula vulgaris, Linum catharticum, Epipactis atrorubens, Euphrasia confusa, Euphrasia officinalis, Plantago lanceolata, Plantago maritima, Veronica officinalis, Polygala vulgaris, Polygonum viviparum, Primula farinosa, Primula vulgaris, Thalictrum minus, Dryas octopetala, Potentilla erecta, Potentilla tabernaemontani, Poterium sanguisorba, Asperula cynanchica, Galium sterneri, Galium verum, Saxifraga hypnoides, Viola hirta, Viola riviniana, Viola rupestris, Agrostis capillaris, Anthoxanthum odoratum, Avenula pratensis, Brachypodium sylvaticum, Briza media, Cynosurus cristatus, Dactylis glomerata, Danthonia decumbens, Deschampsia cespitosa, Festuca ovina, Festuca rubra, Koeleria macrantha, Molinia caerulea, Sesleria caerulea

CG10 — Brownfield, Limestone pavement, Upland calcareous grassland

Festuca ovina-Agrostis capillaris-Thymus praecox grassland

Empetrum nigrum, Empetrum nigrum subsp.nigrum, Calluna vulgaris, Erica cinerea, Vaccinium myrtillus, Carex binervis, Carex caryophyllea, Carex demissa, Carex flacca, Carex nigra, Carex panicea, Carex pilulifera, Carex pulicaris, Juncus squarrosus, Luzula campestris, Luzula multiflora, Luzula sylvatica, Selaginella selaginoides, Breutelia chrysocoma, Bryum pallens, Bryum pseudotriquetrum, Mnium hornum, Plagiomnium undulatum, Rhizomnium punctatum, Dicranum scoparium, Ditrichum flexicaule, Fissidens adianthoides, Fissidens osmundoides, Racomitrium canescens sens.lat., Racomitrium lanuginosum, Calliergonell cuspidatum, Ctenidium molluscum, Hylocomium splendens, Hypnum cupressiforme, Hypnum jutlandicum, Pleurozium schreberi, Pseudoscleropodium purum, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Sanionia uncinata, Thuidium delicatulum, Thuidium tamariscinum, Tortella tortuosa, Frullania tamarisci, Lophocolea bidentata, Plagiochila asplenioides, Ptilidium ciliare, Scapania undulata, Cetraria islandica, Peltigera canina, Angelica sylvestris, Achillea millefolium, Antennaria dioica, Bellis perennis, Cirsium palustre, Hieraclium spp., Hypochaeris radicata, Jacobaea vulgaris, Pilosella officinarum, Scorzoneroides autumnalis, Solidago virgaurea, Cardamine pratensis, Campanula rotundifolia, Succisa pratensis, Cerastium fontanum, Silene acaulis, Vaccinium vitis-idaea, Lathyrus montanus, Lotus corniculatus, Trifolium repens, Gentianella campestris, Hypericum pulchrum, Thymus praecox, Pinguicula vulgaris, Linum catharticum, Euphrasia confusa, Euphrasia officinalis, Euphrasia scottica, Oxalis acetosella, Plantago lanceolata, Plantago maritima, Veronica officinalis, Polygala serpyllifolia, Polygonum viviparum, Rumex acetosa, Primula vulgaris, Ranunculus acris, Ranunculus repens, Thalictrum alpinum, Alchemilla alpina, Alchemilla filicaulis, Alchemilla glabra, Alchemilla wichurae, Alchemilla xanthochlora, Filipendula ulmaria, Geum rivale, Potentilla crantzii, Potentilla erecta, Potentilla sterilis, Rubus idaeus, Galium boreale, Galium saxatile, Galium sterneri, Galium verum, Saxifraga aizoides, Saxifraga oppositifolia, Viola riviniana, Agrostis canina, Agrostis capillaris, Aira praecox, Anthoxanthum odoratum, Avenula pratensis, Briza media, Cynosurus cristatus, Danthonia decumbens, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Holcus lanatus, Koeleria macrantha, Molinia caerulea, Nardus stricta, Poa pratensis, Blechnum spicant, Pteridium aquilinum, Botrychium lunaria, Thelypteris limbosperma

CG11 — Upland calcareous grassland

Festuca ovina-Agrostis capillaris-Alchemilla alpina grass-heath

Empetrum nigrum, Calluna vulgaris, Erica tetralix, Vaccinium myrtillus, Salix herbacea, Carex bigelowii, Carex binervis, Carex caryophyllea, Carex flacca, Carex panicea, Carex pilulifera, Carex pulicaris, Trichophorum cespitosum, Juncus squarrosus, Juncus trifidus, Luzula campestris, Luzula multiflora, Luzula spicata, Luzula sylvatica, Diphasiastrum alpinum, Huperzia selago, Selaginella selaginoides, Breutelia chrysocoma, Mnium hornum, Plagiomnium undulatum, Dicranum scoparium, Racomitrium canescens sens.lat., Racomitrium lanuginosum, Ctenidium molluscum, Hylocomium splendens, Hypnum cupressiforme, Pleurozium schreberi, Pseudoscleropodium purum, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Sanionia uncinata, Thuidium delicatulum, Thuidium tamariscinum, Pogonatum urnigerum, Polytrichastrum alpinum, Barbilophozia lycopodioides, Diplophyllum albicans, Frullania tamarisci, Nardia scalaris, Ptilidium ciliare, Tritomaria quinquedentata, Cetraria islandica, Cladonia pyxidata, Cladonia uncialis, Peltigera canina, Achillea millefolium, Antennaria dioica, Gnaphalium supinum, Hieraclium spp., Scorzoneroides autumnalis, Taraxacum officianalis, Campanula rotundifolia, Succisa pratensis, Cerastium alpinum, Cerastium fontanum, Minuartia sedoides, Silene acaulis, Vaccinium vitis-idaea, Lathyrus montanus, Trifolium repens, Thymus praecox, Pinguicula vulgaris, Linum catharticum, Narthecium ossifragum, Dactylorhiza viridis, Euphrasia officinalis, Oxalis acetosella, Plantago lanceolata, Plantago maritima, Veronica officinalis, Veronica serpyllifolia, Armeria maritima, Polygonum viviparum, Rumex acetosa, Primula vulgaris, Anemone nemorosa, Ranunculus acris, Thalictrum alpinum, Trollius europaeus, Alchemilla alpina, Alchemilla filicaulis, Alchemilla xanthochlora, Filipendula ulmaria, Geum rivale, Potentilla crantzii, Potentilla erecta, Sibbaldia procumbens, Galium boreale, Galium saxatile, Saxifraga aizoides, Saxifraga hypnoides, Saxifraga oppositifolia, Viola canina, Viola palustris, Viola riviniana, Agrostis canina, Agrostis capillaris, Anthoxanthum odoratum, Danthonia decumbens, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Festuca vivipara, Molinia caerulea, Nardus stricta, Blechnum spicant, Botrychium lunaria, Thelypteris limbosperma

CG13 — Limestone pavement, Upland calcareous grassland

Dryas octopetala-Carex flacca heath

Salix repens, Empetrum nigrum, Empetrum nigrum subsp.nigrum, Calluna vulgaris, Juniperus communis, Arctostaphylos uva-ursi, Rubus saxatilis, Carex flacca, Carex panicea, Carex pulicaris, Carex rupestris, Schoenus nigricans, Luzula campestris, Selaginella selaginoides, Breutelia chrysocoma, Dicranum scoparium, Ditrichum flexicaule, Fissidens dubius, Racomitrium lanuginosum, Ctenidium molluscum, Entodon concinnus, Homalothecium lutescens, Hylocomium splendens, Hypnum cupressiforme, Loeskeobryum brevirostre, Neckera complanata, Neckera crispa, Pleurozium schreberi, Pseudoscleropodium purum, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Rhytidium rugosum, Thuidium delicatulum, Thuidium tamariscinum, Tortella tortuosa, Frullania tamarisci, Plagiochila asplenioides, Scapania undulata, Cladonia rangiformis, Solorina saccata, Daucus carota, Antennaria dioica, Bellis perennis, Centaurea nigra, Hypochaeris radicata, Jacobaea vulgaris, Pilosella officinarum, Scorzoneroides autumnalis, Solidago virgaurea, Taraxacum officianalis, Campanula rotundifolia, Succisa pratensis, Cerastium fontanum, Anthyllis vulneraria, Lathyrus montanus, Lotus corniculatus, Trifolium pratense, Trifolium repens, Gentianella amarella, Hypericum pulchrum, Thymus praecox, Pinguicula vulgaris, Linum catharticum, Epipactis atrorubens, Neottia ovata, Orchis mascula, Euphrasia confusa, Euphrasia officinalis, Plantago lanceolata, Plantago maritima, Plantago media, Polygala serpyllifolia, Polygonum viviparum, Primula vulgaris, Ranunculus acris, Thalictrum alpinum, Dryas octopetala, Filipendula ulmaria, Potentilla erecta, Galium saxatile, Galium verum, Saxifraga aizoides, Viola riviniana, Agrostis canina, Agrostis capillaris, Anthoxanthum odoratum, Avenula pratensis, Cynosurus cristatus, Danthonia decumbens, Festuca ovina, Festuca rubra, Festuca vivipara, Koeleria macrantha, Molinia caerulea, Polystichum aculeatum

U4 — Lowland dry acid grassland, Upland acid grassland, Upland calcareous grassland

Festuca ovina-Agrostis capillaris-Galium saxatile grassland

Calluna vulgaris, Vaccinium myrtillus, Carex binervis, Carex caryophyllea, Carex echinata, Carex nigra, Carex panicea, Carex pilulifera, Juncus effusus, Juncus squarrosus, Luzula campestris, Luzula multiflora, Luzula sylvatica, Mnium hornum, Dicranum scoparium, Racomitrium lanuginosum, Hylocomium splendens, Hypnum cupressiforme, Pleurozium schreberi, Pseudoscleropodium purum, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Thuidium tamariscinum, Polytrichastrum alpinum, Polytrichum commune, Lophocolea bidentata, Conopodium majus, Achillea millefolium, Bellis perennis, Cirsium arvense, Cirsium vulgare, Taraxacum officianalis, Campanula rotundifolia, Succisa pratensis, Cerastium fontanum, Lathyrus montanus, Lotus corniculatus, Trifolium pratense, Trifolium repens, Thymus praecox, Euphrasia officinalis, Oxalis acetosella, Plantago lanceolata, Veronica chamaedrys, Veronica officinalis, Polygala serpyllifolia, Rumex acetosa, Primula vulgaris, Anemone nemorosa, Ranunculus acris, Ranunculus repens, Potentilla erecta, Poterium sanguisorba, Galium saxatile, Galium verum, Viola lutea, Viola palustris, Viola riviniana, Agrostis canina, Agrostis capillaris, Alopecurus pratensis, Anthoxanthum odoratum, Avenula pratensis, Briza media, Cynosurus cristatus, Dactylis glomerata, Danthonia decumbens, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Holcus lanatus, Holcus mollis, Lolium perenne, Molinia caerulea, Nardus stricta, Poa annua, Poa pratensis, Blechnum spicant, Pteridium aquilinum, Chara curta

U5 — Upland acid grassland, Upland calcareous grassland

Nardus stricta-Galium saxatile grassland

Empetrum nigrum subsp.nigrum, Calluna vulgaris, Erica cinerea, Erica tetralix, Vaccinium myrtillus, Carex bigelowii, Carex binervis, Carex demissa, Carex nigra, Carex panicea, Carex pilulifera, Carex pulicaris, Eriophorum angustifolium, Eriophorum vaginatum, Trichophorum cespitosum, Juncus effusus, Juncus squarrosus, Luzula campestris, Luzula multiflora, Luzula sylvatica, Huperzia selago, Selaginella selaginoides, Aulacomnium palustre, Pohlia nutans, Campylopus flexuosus, Dicranella heteromalla, Dicranum scoparium, Racomitrium lanuginosum, Calliergonell cuspidatum, Hylocomium splendens, Hypnum cupressiforme, Plagiothecium undulatum, Pleurozium schreberi, Pseudoscleropodium purum, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Thuidium tamariscinum, Polytrichastrum alpinum, Polytrichum commune, Polytrichum formosum, Polytrichum juniperinum, Sphagnum papillosum, Barbilophozia floerkei, Calypogeia muelleriana, Diplophyllum albicans, Lophocolea bidentata, Lophozia ventricosa, Pleurozia purpurea, Ptilidium ciliare, Scapania gracilis, Cetraria islandica, Cladonia uncialis, Cirsium palustre, Scorzoneroides autumnalis, Campanula rotundifolia, Cerastium fontanum, Equisetum palustre, Vaccinium vitis-idaea, Trifolium repens, Narthecium ossifragum, Plantago lanceolata, Polygala serpyllifolia, Anemone nemorosa, Ranunculus acris, Alchemilla alpina, Potentilla erecta, Galium saxatile, Viola riviniana, Agrostis capillaris, Agrostis vinealis, Anthoxanthum odoratum, Danthonia decumbens, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Molinia caerulea, Nardus stricta, Blechnum spicant

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