The Wilderness & Vermin Valley

Site of Special Scientific Interest · 52.4519, -2.2769

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Staffordshire County

Condition (Natural England)

Unfavourable Recovering (2)
UnitFeatureConditionArea (ha)Assessed
SO812838 Unfavourable Recovering 2.81 2008-10-21
SO815832 Unfavourable Recovering 1.71 2009-09-03

Geology & landscape

Geological Period: Carboniferous

Description

Area, 4.5 ha. 11.1 ac. Description The site consists of two remnants of ancient woodland lying in the valley of the Crompton Brook to the west of Kinver. The site overlies grey clays, shales and sandstones of the Upper Coal Measures Carboniferous. These have given rise to coarse, loamy soils prone to seasonal water logging. The variable drainage and presence of base rich springs have had a marked influence on the composition of the woodland. The site is an example of ash Fraxinus excelsior wood with hazel Corylus avellana understorey in association with one of the finest stands of ash and field maple Acer campestre in the county. Ash and pedunculate oak Quercus robur are common throughout the canopy especially on drier parts of the site. Also present are the occasional wild cherry Prunus avium and wild service tree Sorbus torminalis, the latter being particularly rare in Staffordshire. Field maple and ash are present on the damper soils and in the wettest areas alongside the stream and around the silted pools, alder Alnus glutinosa and crack willow Salix fragilis are dominant. At the top of the slope the shrub layer consists almost entirely of hazel coppice and hawthorn Crataegus monogyna. On the lower slopes where the soils are deeper and more base rich the shrubs are more varied and include dogwood Cornus sanguinea, guelder rose Viburnum opulus, spindle Euonymus europaeus and wild privet Ligustrum vulgare. The diverse ground flora includes, on the drier soils bramble Rubus fruticosus, bluebell Hyacinthoides non-scripta, yellow archangel Lamiastrum galeobdolon, dog's mercury Mercurialis perennis and enchanter's nightshade Circaea lutetiana. meadowsweet Filipendula ulmaria, great hairy willowherb Epilobium hirsutum, opposite leaved golden saxifrage Chrysosplenium oppositifolium and pendulous sedge Carex pendula occur in the damper areas. Several uncommon species are found on the site including some which are very rare in Staffordshire, such as thin spiked wood sedge Carex strigosa, stinking hellebore Helleborus foetidus and violet helleborine Epipactis purpurata, here at its only known Staffordshire locality.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
opposite-leaved golden- saxifrage Chrysosplenium oppositifolium LC herb saxifragaceae
enchanter's nightshade Circaea lutetiana LC herb onagraceae
great willowherb Epilobium hirsutum LC herb onagraceae
violet helleborine Epipactis purpurata LC herb orchidaceae
meadow sweet Filipendula ulmaria LC herb rosaceae
foetid hellebore Helleborus foetidus LC herb ranunculaceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
yellow archangel Lamiastrum galeobdolon LC herb lamiaceae
dog's mercury Mercurialis perennis LC herb euphorbiaceae
bramble Rubus fruticosus LC herb rosaceae
pendulous sedge Carex pendula LC sedge cyperaceae
thin spiked wood sedge Carex strigosa LC sedge cyperaceae
dogwood Cornus sanguinea LC shrub cornaceae
hawthorn Crataegus monogyna LC shrub rosaceae
spindle tree Euonymus europaeus LC shrub celastraceae
wild privet Ligustrum vulgare LC shrub oleaceae
gelder rose Viburnum opulus LC shrub caprifoliaceae
field maple Acer campestre LC tree aceraceae
alder Alnus glutinosa LC tree salicaceae
hazel Corylus avellana LC tree corylaceae
ash Fraxinus excelsior LC tree oleaceae
wild cherry Prunus avium LC tree rosaceae
common oak Quercus robur LC tree fagaceae
crack willow Salix fragilis Not listed in GB list tree shrub salicaceae

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