Hedenham Wood

Site of Special Scientific Interest · 52.5001, 1.4074

Also within

Norfolk County

Condition (Natural England)

Unfavourable Recovering (2)
UnitFeatureConditionArea (ha)Assessed
TM313944 Unfavourable Recovering 12.3 2010-01-18
TM314947 Unfavourable Recovering 11.1 2010-01-18

Geology & landscape

Rock Type: Glacial Till

Landscape processes: Glacial

Description

Description Hedenham Wood is an ancient woodland situated at the head of a shallow valley on the South Norfolk boulder clay. Much of the wood comprises oak standards over mixed hornbeam coppice but the valley bottom contains wet ash maple wood with stands of Elm. The ground flora is diverse and includes several uncommon species. Heavy calcareous clay on the valley sides supports hornbeam Carpinus betulus coppice with maple Acer campestre, ash Fraxinus excelsior and hazel Corylus avellana under large standards of oak Quercus robur, ash and hornbeam. Other woody species include goat willow Salix caprea, aspen Populus tremula, spindle Euonymus europaeus, guelder rose Viburnum opulus, dogwood Cornus sanguinea and midland hawthorn Crataegus laevigata. On lighter soils hornbeam and ash coppice is almost pure. This is replaced by predominantly ash and maple in the valley bottom, with big, high cut elm Ulmus procera stools in the south. Suckering elm covers the site of Hedenham Hall. Where ground flora is not completely shaded out by the hornbeam, dog’s mercury Mercurialis perennis is generally dominant but enchanter’s nightshade Circaea lutetiana, ramsons Allium ursinum and bluebell Hyacinthoides non-scripta are locally abundant. Overall, the wood’s ground flora appears rather uniform but many species are present at low frequency, most notably greater butterfly orchid Platanthera chlorantha, herb paris Paris quadrifolia and stinking hellebore Helleborus foetidus, but also including dewberry Rubus caesius, hairy wood rush Luzula pilosa, hairy St John’s wort Hypericum hirsutum, wood anemone Anemone nemorosa, sanicle Sanicula europaea, primrose Primula vulgaris and water mint Mentha aquatica. Despite recent replanting with oak and ash in the north and incomplete coppice recoverythere, the vegetation types described above are still discernible. Tufted hair grass Deschampsia cespitosa, soft rush Juncus effusus, hairy St John’s wort and selfheal Prunella vulgaris are more frequent there. Where light penetrates to the rides the flora is fairly rich, including pendulous sedge Carex pendula, wood sedge C. sylvatica, meadowsweet Filipendula ulmaria, hybrid avens Geum x intermedium, yellow pimpernel Lysimachia nemorum and yellow loosestrife L. vulgaris.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
tufted hair grass Deschampsia cespitosa LC grass poaceae
ramson Allium ursinum LC herb liliaceae
wood anemone Anemone nemorosa LC herb ranunculaceae
enchanter's nightshade Circaea lutetiana LC herb onagraceae
meadow sweet Filipendula ulmaria LC herb rosaceae
foetid hellebore Helleborus foetidus LC herb ranunculaceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
hairy St John's wort Hypericum hirsutum LC herb hypericaceae
yellow pimpernel Lysimachia nemorum LC herb primulaceae
water mint Mentha aquatica LC herb lamiaceae
dog's mercury Mercurialis perennis LC herb euphorbiaceae
herb paris Paris quadrifolia VU herb melanthiaceae
greater butterfly orchid Platanthera chlorantha NT herb orchidaceae
primrose Primula vulgaris LC herb primulaceae
selfheal Prunella vulgaris LC herb lamiaceae
dewberry Rubus caesius LC herb rosaceae
sanicle Sanicula europaea LC herb apiaceae
soft rush Juncus effusus LC rush juncaceae
hairy wood-rush Luzula pilosa LC rush juncaceae
pendulous sedge Carex pendula LC sedge cyperaceae
dogwood Cornus sanguinea LC shrub cornaceae
midland hawthorn Crataegus laevigata LC shrub rosaceae
spindle tree Euonymus europaeus LC shrub celastraceae
gelder rose Viburnum opulus LC shrub caprifoliaceae
field maple Acer campestre LC tree aceraceae
hornbeam Carpinus betulus LC tree betulaceae
hazel Corylus avellana LC tree corylaceae
ash Fraxinus excelsior LC tree oleaceae
aspen Populus tremula LC tree salicaceae
common oak Quercus robur LC tree fagaceae
English elm Ulmus procera LC tree ulmaceae
goat willow Salix caprea LC tree shrub salicaceae