Over and Lawn Woods

Site of Special Scientific Interest · 52.1096, 0.3874

Condition (Natural England)

Unfavourable Recovering (2)
UnitFeatureConditionArea (ha)Assessed
TL625483 Unfavourable Recovering 45.32 2011-12-09
TL630483 Unfavourable Recovering 45.32 2011-12-09

Geology & landscape

Rock Type: Glacial Till

Landscape processes: Glacial

Description

Area, 45 hectares 111 ac Description This woodland is of ancient origin and as such holds well developed plant and animal communities, many of the species represented being confined to such ancient woodlands which are restricted to lowland England where their extent has declined in recent years. Over and Lawn Woods, lying on chalky Boulder Clay, holds a variety of woodland community types and are noted in particular for the heavy soil form of the hazel ash stand type. Other associations represented are wet ash maple, together with more restricted areas of hazel pedunculate oak and wet ash wych elm. The traditional management of these woods has been of coppice with standards, a practice which has retained the ‘natural’ distribution of tree species and maintained a diversity of structure and hence of plant and animal life. The dominant tree species are pedunculate oak Quercus robur and ash Fraxinus excelsior standards together with ash, hazel Corylus avellana and field maple Acer campestre as coppice. Shrubs include spindle Euonymus europaeus, guelder rose Viburnum opulus and wayfaring tree Viburnum lantana. honeysuckle Lonicera periclymenum is also frequently found. The ground flora is characteristically of the dog’s mercury Mercurialis perennis bluebell Hyacinthoides non-scripta type together with a rich variety of additional ancient woodland plants including ramsons Allium ursinum, yellow archangel Lamiastrum galeobdolon, wood anemone Anemone nemorosa and sanicle Sanicula europaea. Of additional note is the presence of a number of locally rare species such as wood sorrel Oxalis acetosella, woodruff Galium odoratum, yellow pimpernel Lysimachia nemorum and the moss Fissidens exilis. The wood also supports the nationally restricted oxlip Primula elatior. Additional structural and species diversity is provided by the system of rides and glades. These support a variety of grasses and herbs including meadow vetchling Lathyrus pratensis, field wood rush Luzula campestris and meadowsweet Filipendula ulmaria. A stream and pond within the woods add additional habitat variety and further enhance the value of the area for animal life.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
ramson Allium ursinum LC herb liliaceae
wood anemone Anemone nemorosa LC herb ranunculaceae
meadow sweet Filipendula ulmaria LC herb rosaceae
woodruff Galium odoratum LC herb rubiaceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
yellow archangel Lamiastrum galeobdolon LC herb lamiaceae
meadow vetchling Lathyrus pratensis LC herb fabaceae
honeysuckle Lonicera periclymenum LC herb caprifoliaceae
yellow pimpernel Lysimachia nemorum LC herb primulaceae
dog's mercury Mercurialis perennis LC herb euphorbiaceae
wood sorrel Oxalis acetosella LC herb oxalidaceae
oxlip Primula elatior LC herb primulaceae
sanicle Sanicula europaea LC herb apiaceae
slender pocket moss Fissidens exilis LC moss dicranales
field wood rush Luzula campestris LC rush juncaceae
spindle tree Euonymus europaeus LC shrub celastraceae
wayfaring tree Viburnum lantana LC shrub caprifoliaceae
gelder rose Viburnum opulus LC shrub caprifoliaceae
field maple Acer campestre LC tree aceraceae
hazel Corylus avellana LC tree corylaceae
ash Fraxinus excelsior LC tree oleaceae
common oak Quercus robur LC tree fagaceae

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