Arnecliff and Park Hole Woods

Site of Special Scientific Interest · 54.4254, -0.7797

Condition (Natural England)

Unfavourable Recovering (1) Favourable (2)
UnitFeatureConditionArea (ha)Assessed
NZ781046 Unfavourable Recovering 17.15 2009-11-17
NZ788048 Favourable 32.37 2016-06-15
NZ792040 Favourable 2.72 2016-06-15

Description

Description The woodland community includes upland oak woodland on acidic soils with holly Ilex aquifolium, hard fern Blechnum spicant and a species rich fern community. Of particular interest is a large population of the Killarney Fern Trichomanes speciosum, an internationally rare species. General description The site consists of East Arnecliff Wood, running east to west and part of Park Hole Wood, running north to south, which are ancient semi natural woodlands and part of West Arnecliff Wood which also runs from north to south and is a mixture of ancient semi natural and ancient replanted woodland. These woods are an important feature of Glaisdale valley which lies round the River Esk. East Arnecliff Wood rises steeply on the southern bank of the River Esk. Pedunculate oak Quercus robur, rowan Sorbus aucuparia and birch Betula Sp. are widespread and abundant. Wych elm Ulmus glabra is locally frequent and there is a widespread shrub layer of hazel Corylus avellana, some holly and occasional hawthorn Crataegus monogyna. The upper acidic parts have widespread wavy hair grass Deschampsia flexuosa, with greater wood rush Luzula sylvatica, hairy wood rush Luzula pilosa, bilberry Vaccinium myrtillus, scattered heather Calluna vulgaris, hard fern and mosses. West Arnecliff Wood is contiguous with East Arnecliff Wood. The wood rises steeply up from Glaisdale beck and is west facing. Park Hole Wood is a mixed deciduous wood occupying a moderately steep sided south facing valley. There is a mixture of mature and sub mature oak Quercus sp and birch. Alder Alnus glutinosa is scattered near the beck. hazel is widespread in the shrub layer with scattered or locally frequent holly, hawthorn and blackthorn Prunus spinosa. The herb layer is moderately diverse and includes hard shield fern Polystichum aculeatum, tufted hair grass Deschampsia cespitosa and sedges Carex sp. The wood lies adjacent to water courses and have several springs among the rocky areas which provide damp, sheltered and shaded conditions in which a rich fern and moss flora thrives. This flora includes the locally rare species Tunbridge filmy fern Hymenophyllum tunbrigense and hay scented buckler fern Dryopteris aemula. The regionally rare wood fescue grass Festuca altissima is also present on this site. East Arnecliff Wood also contains a few shallow pools. Other information The Killarney fern is listed on Annex II and IVa of the European Communities Directive 92/43/ EEC, on the Conservation of Natural Habitats and of Wild Fauna and Flora – The Habitats Directive Convention of the Conservation of European Wildlife and Natural Habitats, BERNI Schedule 8 of the Wildlife and Countryside Act 1981 Conservation Regulations 94 and the priority species list for Biodiversity Action Plan the IUCN Red Data Book as ‘rare’ in the great Britain Red Data Book as ‘vulnerable’

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
hard fern Blechnum spicant LC fern blechnaceae
hay-scented fern Dryopteris aemula LC fern dryopteridaceae
Tunrbidge filmy-fern Hymenophyllum tunbrigense VU fern hymenophyllaceae
hard shield-fern Polystichum aculeatum LC fern dryopteridaceae
Killarney fern Trichomanes speciosum LC fern hymenophyllaceae
tufted hair grass Deschampsia cespitosa LC grass poaceae
wavy hair grass Deschampsia flexuosa Not listed in GB list grass poaceae
wood fescue Festuca altissima Not listed in GB list grass poaceae
hairy wood-rush Luzula pilosa LC rush juncaceae
great wood rush Luzula sylvatica LC rush juncaceae
hawthorn Crataegus monogyna LC shrub rosaceae
blackthorn Prunus spinosa LC shrub rosaceae
billberry Vaccinium myrtillus LC shrub ericaceae
bell heather or ling Calluna vulgaris NT shrub dwarf ericaceae
alder Alnus glutinosa LC tree salicaceae
hazel Corylus avellana LC tree corylaceae
holly Ilex aquifolium LC tree aquifoliaceae
common oak Quercus robur LC tree fagaceae
rowan Sorbus aucuparia LC tree rosaceae
wych elm Ulmus glabra LC tree ulmaceae

Insects to look out for

These moths, butterflies and beetles are known to feed on plants recorded at this site, and carry a notable UK conservation status — but a host-plant being present doesn't mean the insect has actually been recorded here. Treat this as "worth watching for," not a confirmed sighting.

SpeciesStatusVia host-plant
Speckled footman
Coscinia cribraria
Critically Endangered Vaccinium myrtillus
Oak lutestring
Cymatophorina diluta
Endangered Quercus robur
Figure of eight
Diloba caeruleocephala
Endangered Crataegus spp., Prunus spinosa, Prunus spp.
The lappet
Gastropacha quercifolia
Endangered Crataegus monogyna, Prunus spinosa, Prunus spp.
Shoulder-striped clover
Heliothis maritima
Endangered Calluna vulgaris
Scarce vapourer
Orgyia recens
Endangered Alnus glutinosa, Corylus avellana, Crataegus spp., Prunus spinosa, Quercus spp., Ulmus spp.
Black hairstreak
Satyrium pruni
Endangered Prunus spinosa
White-letter hairstreak
Satyrium w-album
Endangered Ulmus glabra, Ulmus spp.
Mouse moth
Amphipyra tragopoginis
Vulnerable Crataegus spp.
The sprawler
Asteroscopus sphinx
Vulnerable Corylus avellana, Crataegus spp., Prunus spinosa, Prunus spp., Quercus spp., Ulmus spp.
Broom moth
Ceramica pisi
Vulnerable Calluna vulgaris, Ulmus spp., Vaccinium myrtillus
Mottled umber
Erannis defoliaria
Vulnerable Corylus avellana, Crataegus spp., Prunus spinosa, Quercus spp., Sorbus aucuparia, Ulmus spp., Vaccinium myrtillus
Satyr pug
Eupithecia satyrata
Vulnerable Calluna vulgaris
Grayling
Hipparchia semele
Vulnerable Deschampsia cespitosa
True lover's knot
Lycophotia porphyrea
Vulnerable Calluna vulgaris
The lackey
Malacosoma neustria
Vulnerable Corylus avellana, Crataegus monogyna, Prunus spinosa, Prunus spp., Quercus spp., Ulmus spp.
Pale brindled
Phigalia pilosaria
Vulnerable Alnus glutinosa, Corylus avellana, Crataegus monogyna, Prunus spinosa, Quercus spp., Ulmus glabra
Silver studded blue
Plebejus argus
Vulnerable Calluna vulgaris
The anomalous
Stilbia anomala
Vulnerable Deschampsia cespitosa
Brown hairstreak
Thecla betulae
Vulnerable Prunus spinosa
Early moth
Theria primaria
Vulnerable Crataegus monogyna, Prunus spinosa, Quercus spp., Vaccinium myrtillus
Pale eggar
Trichiura crataegi
Vulnerable Calluna vulgaris, Corylus avellana, Crataegus monogyna, Prunus spinosa, Quercus spp., Vaccinium myrtillus
Oak hook-tip
Watsonalla binaria
Vulnerable Quercus robur
Flounced chestnut
Agrochola helvola
Near Threatened Calluna vulgaris, Crataegus monogyna, Quercus spp., Ulmus spp., Vaccinium myrtillus
Beaded chestnut
Agrochola lychnidis
Near Threatened Crataegus monogyna, Vaccinium myrtillus
Grey chi
Antitype chi
Near Threatened Crataegus monogyna
Garden tiger
Arctia caja
Near Threatened Prunus spinosa, Sorbus aucuparia
Light crimson underwing
Catocala promissa
Near Threatened Quercus robur
Dark crimson underwing
Catocala sponsa
Near Threatened Quercus robur
Dusky-lemon sallow
Cirrhia gilvago
Near Threatened Ulmus glabra
The sallow
Cirrhia icteritia
Near Threatened Ulmus glabra
Small heath
Coenonympha pamphilus
Near Threatened Festuca spp.
Rosy marsh moth
Coenophila subrosea
Near Threatened Vaccinium myrtillus
Dingy mocha
Cyclophora pendularia
Near Threatened Alnus glutinosa
Heart moth
Dicycla oo
Near Threatened Quercus robur
Grey scalloped
Dyscia fagaria
Near Threatened Calluna vulgaris
Kentish glory
Endromis versicolora
Near Threatened Alnus glutinosa
Large thorn
Ennomos autumnaria
Near Threatened Alnus glutinosa, Corylus avellana, Crataegus spp., Prunus spinosa, Prunus spp., Quercus spp., Ulmus spp.
September thorn
Ennomos erosaria
Near Threatened Quercus spp.
The Silurian
Eriopygodes imbecilla
Near Threatened Vaccinium myrtillus
Autumnal rustic
Eugnorisma glareosa
Near Threatened Calluna vulgaris
Grey pug
Eupithecia subfuscata
Near Threatened Crataegus monogyna, Prunus spinosa
Double dart
Graphiphora augur
Near Threatened Crataegus spp., Prunus spinosa, Quercus spp., Ulmus spp.
Weaver's wave
Idaea contiguaria
Near Threatened Calluna vulgaris
Clay fan-foot
Paracolax tristalis
Near Threatened Quercus spp.
Common fan-foot
Pechipogo strigilata
Near Threatened Quercus robur
Frosted green
Polyploca ridens
Near Threatened Quercus robur
Scotch burnet
Zygaena exulans
Near Threatened Vaccinium myrtillus

Host-plant data: Cook et al. (2025), Traits data for the butterflies and macro-moths of Great Britain and Ireland, 2024, UK Centre for Ecology & Hydrology / Butterfly Conservation; and Padovani et al. (2020), Database of Insects and their Food Plants (DBIF), UK Centre for Ecology & Hydrology (both Open Government Licence). Contains data supplied by UK Centre for Ecology & Hydrology.

Plant communities

W10 — Atlantic oak wood, Lowland dry oak and birch wood, Lowland mixed oak and ash wood, Wood pasture

Quercus robur-Pteridium aquilinum-Rubus fruticosus woodland

Matches 14 species from the description above: Alnus glutinosa, Blechnum spicant, Corylus avellana, Crataegus monogyna, Deschampsia cespitosa, Deschampsia flexuosa, Ilex aquifolium, Luzula pilosa, Luzula sylvatica, Prunus spinosa, Quercus robur, Sorbus aucuparia, Ulmus glabra, Vaccinium myrtillus

Hedera helix, Acer pseudoplatanus, Ilex aquifolium, Betula pendula, Betula pubescens, Carpinus betulus, Corylus avellana, Fagus sylvatica, Castanea sativa, Quercus hybrid, Quercus petraea, Quercus robur, Tilia cordata, Tilia x europaea, Fraxinus excelsior, Larix decidua, Pinus nigra, Pinus sylvestris, Pseudotsuga menziesii, Malus sylvestris, Prunus avium, Sorbus aucuparia, Alnus glutinosa, Populus tremula, Taxus baccata, Ulmus glabra, Sambucus nigra, Viburnum lantana, Viburnum opulus, Rhododendron ponticum, Vaccinium myrtillus, Cytisus scoparius, Ulex europaeus, Ligustrum vulgare, Crataegus laevigata, Crataegus monogyna, Prunus spinosa, Carex sylvatica, Juncus effusus, Luzula multiflora, Luzula pilosa, Luzula sylvatica, Mnium hornum, Plagiomnium rostratum, Plagiomnium undulatum, Ceratodon purpureus, Dicranella heteromalla, Dicranoweisia cirrata, Dicranum scoparium, Amblystegium serpens, Brachythecium rutabulum, Eurhynchium striatum, Hypnum cupressiforme, Isothecium myosuroides, Kindbergia praelonga, Plagiothecium denticulatum, Plagiothecium undulatum, Pseudoscleropodium purum, Pseudotaxiphyllum elegans, Thuidium tamariscinum, Atrichum undulatum, Polytrichum formosum, Lophocolea bidentata, Pellia epiphylla, Narcissus pseudonarcissus, Aegopodium podagraria, Anthriscus sylvestris, Conopodium majus, Heracleum sphondylium, Sanicula europaea, Jacobaea vulgaris, Solidago virgaurea, Lonicera periclymenum, Silene dioica, Stellaria holostea, Stellaria media agg., Euphorbia amygdaloides, Mercurialis perennis, Corydalis claviculata, Geranium robertianum, Ajuga reptans, Glechoma hederacea, Lamiastrum galeobdolon, Stachys sylvatica, Teucrium scorodonia, Hyacinthoides non-scripta, Chamerion angustifolium, Circaea lutetiana, Oxalis acetosella, Digitalis purpurea, Veronica chamaedrys, Rumex acetosa, Rumex sanguineus, Lysimachia nemorum, Lysimachia nummularia, Primula vulgaris, Anemone nemorosa, Ficaria verna, Ranunculus repens, Fragaria vesca, Potentilla sterilis, Rosa canina, Rubus fruticosus agg., Rubus idaeus, Galium aparine, Galium odoratum, Galium saxatile, Melanpyrum pratense, Urtica dioica, Viola riviniana, Agrostis capillaris, Anthoxanthum odoratum, Arrhenatherum elatius, Brachypodium sylvaticum, Bromopsis ramosa, Dactylis glomerata, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Holcus lanatus, Holcus mollis, Melica uniflora, Milium effusum, Poa nemoralis, Poa trivialis, Blechnum spicant, Pteridium aquilinum, Dryopteris borreri, Dryopteris dilatata, Dryopteris filix-mas, Thelypteris limbosperma, Athyrium filix-femina

W17 — Altantic hazel wood, Atlantic oak wood, Caledonian forest, Upland birch wood, Wood pasture

Quercus petraea-Betula pubescens-Dicranum majus woodland

Matches 14 species from the description above: Blechnum spicant, Calluna vulgaris, Corylus avellana, Crataegus monogyna, Deschampsia cespitosa, Deschampsia flexuosa, Dryopteris aemula, Hymenophyllum tunbrigense, Ilex aquifolium, Luzula pilosa, Luzula sylvatica, Quercus robur, Sorbus aucuparia, Vaccinium myrtillus

Hedera helix, Salix caprea, Acer pseudoplatanus, Ilex aquifolium, Betula pendula, Betula pubescens, Corylus avellana, Fagus sylvatica, Quercus hybrid, Quercus petraea, Quercus robur, Fraxinus excelsior, Sorbus aucuparia, Calluna vulgaris, Erica cinerea, Erica tetralix, Juniperus communis, Rhododendron ponticum, Vaccinium myrtillus, Crataegus monogyna, Carex pilulifera, Luzula multiflora, Luzula pilosa, Luzula sylvatica, Andreaea rupestris, Mnium hornum, Rhizomnium punctatum, Campylopus flexuosus, Dicranella heteromalla, Dicranodontium denudatum, Dicranum fuscescens, Dicranum majus, Dicranum scoparium, Dicranum scottianum, Leucobryum glaucum, Ptychomitrium polyphyllum, Racomitrium fasciculare, Racomitrium heterostichum, Racomitrium lanuginosum, Eurhynchium striatum, Heterocladium heteropterum, Hylocomiastrum umbratum, Hylocomium armoricum, Hylocomium splendens, Hypnum callichroum, Hypnum cupressiforme, Hypnum jutlandicum, Isothecium myosuroides, Kindbergia praelonga, Loeskeobryum brevirostre, Plagiothecium denticulatum, Plagiothecium undulatum, Pleurozium schreberi, Pseudoscleropodium purum, Pseudotaxiphyllum elegans, Ptilium crista-castrensis, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Sematophyllum demissum, Sematophyllum micans, Thuidium delicatulum, Thuidium tamariscinum, Polytrichum commune, Polytrichum formosum, Sphagnum capillifolium, Sphagnum fimbriatum, Sphagnum palustre, Sphagnum russowii, Sphagnum subnitens, Tetraphis pellucida, Adelanthus decipiens, Anastrepta orcadensis, Barbilophozia attenuata, Barbilophozia floerkei, Bazzania tricrenata, Bazzania trilobata, Blepharostoma trichophyllum, Calypogeia fissa, Calypogeia muelleriana, Cephalozia bicuspidata, Diplophyllum albicans, Frullania tamarisci, Fuscocephaloziopsis lunulifolia, Harpanthus scutatus, Jamesoniella autumnalis, Jungermannia gracillima, Lepidozia pearsonii, Lepidozia reptans, Lophocolea bidentata, Lophocolea heterophylla, Lophozia ventricosa, Marsupella emarginata, Microlejeunea ulicina, Mylia taylorii, Nowellia curvifolia, Plagiochila asplenioides, Plagiochila atlantica, Plagiochila killarniensis, Plagiochila porelloides, Plagiochila punctata, Plagiochila spinulosa, Ptilidium ciliare, Saccogyna viticulosa, Scapania gracilis, Scapania nemorea, Scapania umbrosa, Tritomaria exsectiformis, Tritomaria quinquedentata, Cladonia arbuscula, Cladonia chlorophaea, Cladonia digitata, Cladonia furcata, Cladonia impexa, Cladonia polydactyla, Cladonia squamosa, Cladonia squamules, Cladonia subcervicornis, Parmelia saxatilis, Sphaerophorus fragilis, Sphaerophorus globosus, Solidago virgaurea, Lonicera periclymenum, Succisa pratensis, Cornus suecica, Hypericum pulchrum, Teucrium scorodonia, Hyacinthoides non-scripta, Goodyera repens, Oxalis acetosella, Digitalis purpurea, Rumex acetosa, Lysimachia nemorum, Trientalis europaea, Anemone nemorosa, Potentilla erecta, Rubus fruticosus agg., Rubus idaeus, Galium saxatile, Melanpyrum pratense, Viola riviniana, Agrostis capillaris, Agrostis stolonifera, Agrostis vinealis, Anthoxanthum odoratum, Dactylis glomerata, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Holcus lanatus, Holcus mollis, Molinia caerulea, Poa nemoralis, Poa pratensis, Blechnum spicant, Pteridium aquilinum, Dryopteris aemula, Dryopteris borreri, Dryopteris dilatata, Dryopteris filix-mas, Hymenophyllum tunbrigense, Hymenophyllum wilsonii, Polypodium vulgare, Thelypteris limbosperma, Athyrium filix-femina

W11 — Altantic hazel wood, Atlantic oak wood, Caledonian forest, Upland birch wood, Wood pasture

Quercus petraea-Betula pubescens-Oxalis acetosella woodland

Matches 12 species from the description above: Blechnum spicant, Calluna vulgaris, Corylus avellana, Crataegus monogyna, Deschampsia cespitosa, Deschampsia flexuosa, Ilex aquifolium, Luzula pilosa, Luzula sylvatica, Quercus robur, Sorbus aucuparia, Vaccinium myrtillus

Acer campestre, Ilex aquifolium, Betula pendula, Betula pubescens, Corylus avellana, Fagus sylvatica, Quercus hybrid, Quercus petraea, Quercus robur, Fraxinus excelsior, Larix decidua, Sorbus aucuparia, Calluna vulgaris, Erica cinerea, Juniperus communis, Vaccinium myrtillus, Cytisus scoparius, Crataegus monogyna, Rubus saxatilis, Carex pilulifera, Luzula campestris, Luzula multiflora, Luzula pilosa, Luzula sylvatica, Mnium hornum, Plagiomnium affine, Plagiomnium undulatum, Dicranum majus, Dicranum scoparium, Cirriphyllum piliferum, Eurhynchium striatum, Hylocomium splendens, Hypnum cupressiforme, Isothecium myosuroides, Kindbergia praelonga, Loeskeobryum brevirostre, Plagiothecium denticulatum, Plagiothecium undulatum, Pleurozium schreberi, Pseudoscleropodium purum, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Thuidium tamariscinum, Atrichum undulatum, Polytrichum commune, Polytrichum formosum, Polytrichum longisetum, Sphagnum capillifolium, Diplophyllum albicans, Lophocolea bidentata, Plagiochila asplenioides, Plagiochila spinulosa, Angelica sylvestris, Conopodium majus, Campanula rotundifolia, Lonicera periclymenum, Succisa pratensis, Cerastium fontanum, Stellaria holostea, Pyrola minor, Vaccinium vitis-idaea, Lathyrus montanus, Geranium robertianum, Hypericum pulchrum, Ajuga reptans, Teucrium scorodonia, Convallaria majalis, Hyacinthoides non-scripta, Oxalis acetosella, Digitalis purpurea, Veronica chamaedrys, Veronica officinalis, Rumex acetosa, Lysimachia nemorum, Primula vulgaris, Trientalis europaea, Anemone nemorosa, Ranunculus acris, Ranunculus repens, Potentilla erecta, Rubus fruticosus agg., Rubus idaeus, Galium aparine, Galium saxatile, Melanpyrum pratense, Viola riviniana, Agrostis capillaris, Agrostis vinealis, Anthoxanthum odoratum, Brachypodium sylvaticum, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Holcus lanatus, Holcus mollis, Poa pratensis, Poa trivialis, Blechnum spicant, Pteridium aquilinum, Dryopteris borreri, Dryopteris dilatata, Dryopteris filix-mas, Thelypteris limbosperma, Athyrium filix-femina

W16 — Atlantic oak wood, Lowland dry oak and birch wood, Wood pasture

Quercus spp.-Betula spp.-Deschampsia flexuosa woodland

Matches 11 species from the description above: Blechnum spicant, Calluna vulgaris, Corylus avellana, Crataegus monogyna, Deschampsia cespitosa, Deschampsia flexuosa, Ilex aquifolium, Luzula sylvatica, Quercus robur, Sorbus aucuparia, Vaccinium myrtillus

Hedera helix, Acer pseudoplatanus, Ilex aquifolium, Betula pendula, Betula pubescens, Corylus avellana, Fagus sylvatica, Castanea sativa, Quercus hybrid, Quercus petraea, Quercus robur, Pinus sylvestris, Sorbus aria, Sorbus aucuparia, Populus tremula, Calluna vulgaris, Erica cinerea, Rhododendron ponticum, Vaccinium myrtillus, Ulex europaeus, Ulex gallii, Frangula alnus, Crataegus monogyna, Luzula sylvatica, Mnium hornum, Orthodontium lineare, Pohlia nutans, Campylopus flexuosus, Campylopus pyriformis, Dicranella heteromalla, Dicranodontium denudatum, Dicranoweisia cirrata, Dicranum fuscescens, Dicranum scoparium, Leucobryum glaucum, Hypnum cupressiforme, Hypnum jutlandicum, Isothecium myosuroides, Kindbergia praelonga, Plagiothecium denticulatum, Plagiothecium nemorale, Plagiothecium succulentum, Plagiothecium undulatum, Pleurozium schreberi, Pseudoscleropodium purum, Pseudotaxiphyllum elegans, Rhytidiadelphus loreus, Rhytidiadelphus triquetrus, Thuidium tamariscinum, Tetraphis pellucida, Barbilophozia attenuata, Barbilophozia floerkei, Calypogeia fissa, Calypogeia trichomanis, Cephalozia bicuspidata, Gymnocolea inflata, Lepidozia reptans, Lophocolea bidentata, Lophocolea heterophylla, Cladonia coccifera, Cladonia coniocraea, Cladonia fimbriata, Cladonia polydactyla, Cladonia squamosa, Solidago virgaurea, Lonicera periclymenum, Corydalis claviculata, Teucrium scorodonia, Hyacinthoides non-scripta, Chamerion angustifolium, Oxalis acetosella, Digitalis purpurea, Rumex acetosella, Potentilla erecta, Rubus fruticosus agg., Galium saxatile, Agrostis capillaris, Agrostis stolonifera, Anthoxanthum odoratum, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Holcus lanatus, Holcus mollis, Molinia caerulea, Blechnum spicant, Pteridium aquilinum, Dryopteris dilatata

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

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