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Viewing swaag.org website implies consent to set cookies on your computer. Full details Swaledale and Arkengarthdale Archaeology Group
Registered Charitable Incorporated Organisation Number 1155775
SWAAG Honorary President:
Tim Laurie FSA

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 *****SWAAG_ID***** 283
 Date Entered 18/10/2011
 Updated on 05/12/2011
 Recorded by Tim Laurie
 Category Tree Site Record
 Record Type Botanical HER
 Record Date 29/01/2011
 Location Birkdale, Ellers, Black Scar
 Civil Parish Muker
 Brit. National Grid NY 8445 0122
 Altitude 400m
 Geology Mudstones over Crow Limestone. The Crow Limestone is well exposed and forms the bed of Birkdale Beck here.
 Record Name MUK102 Relict woodland with isolated Junipers on Black Scar, Ellers.
 Record Description This low dark north facing cliff supports the species poor woodland characteristic of acid soils derived from mudstones and sandstones of Namurian Age. Nevertheless the woodland community is of great interest in that several junipers (probably the prostrate form (J.communis ssp nana) grow on the cliff including several young bushes. The plant species list prepared for this locality by Mrs Linda Robinson is as follows: Anthoxanthum odoratum – Sweet Vernal-grass Asplenium scolopendrium – Hart’s-tongue Asplenium trichomanes – Maidenhair Spleenwort Blechnum spicant – Hard-fern Calluna vulgaris - Heather Cardamine pratensis – Cuckoo Flower Carex nigra – Common Sedge Carex pilulifera – Pill Sedge Chamerion angustifolium – Rose-bay Willow-herb Chrysosplenium oppositifolium – Opposite-leaved Golden Saxifrage Cirsium palustre – Marsh Thistle Cystopteris fragilis – Brittle Bladder-fern (Plant List continued below) Dryopteris filix-mas – Male Fern Epilobium brunnescens – New Zealand Willow-herb Festuca ovina – Sheep’s-fescue Galium saxatile – Heath Bedstraw Hypericum pulchrum – Slender St. John’s-wort (Continued below)
 Geographical area Upper Swaledale
 Additional Notes Plant List for Black Scar (Continued) Juniperus communis ssp nana - Juniper Leontodon autumnalis – Autumn Hawkbit Luzula campestris – Field Wood-rush Nardus stricta – Mat Grass Oxalis acetosella – Wood Sorrel Polygala vulgaris – Common Milkwort Polypodium vulgare - Polypody Potentilla erecta - Tormentil Rumex acetosa – Common Sorrel Sagina procumbens – Procumbent Pearlwort Salix cinerea ssp oleifolia - Sallow Solidago virgaurea - Goldenrod Sorbus aucuparia - Rowan Taraxacum sp. - Dandelion Thymus polytrichus - Thyme Vaccinium myrtillus - Bilberry Vaccinium vitis-idaea - Cowberry Viola riviniana – Common Dog Violet
 Image 1 ID 1070         Click image to enlarge
 Image 1 Description Black Scar above Birkdale Beck at Ellers in winter. No sun reaches this cliff in winter.
 Image 2 ID 1071         Click image to enlarge
 Image 2 Description View downstream.
 Image 3 ID 1072         Click image to enlarge
 Image 3 Description Cowberry (Vaccinium vitis idaea) in winter.
 Image 4 ID 1073         Click image to enlarge
 Image 4 Description Cowberry (Vaccinium vitis idaea) in winter. Detail.
 Image 5 ID 1074         Click image to enlarge
 Image 5 Description Juniper (Juniperus communis) in winter.
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