File:Annulohypoxylon multiforme - geograph.org.uk - 1175616.jpg

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Annulohypoxylon_multiforme_-_geograph.org.uk_-_1175616.jpg(640 × 480 pixels, file size: 75 KB, MIME type: image/jpeg)

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English: Birch Woodwart (Hypoxylon multiforme). There is a stand of birch trees at this location, where the soil is generally rather wet and acidic. The fruiting bodies of Beech Woodwart, shown here growing on a birch stump, are often elongated around the girth of the tree (as was the case here). The fruiting bodies in this photograph are up to 15 mm wide, with a warty surface (beneath the surface bumps are spore-producing chambers called perithecia – see the Beech Woodwart link below).

Among the Woodwart species that are illustrated on Geograph, Beech Woodwart – 1066796 – and Hazel Woodwart – 1080101 – are both fairly common; however, Birch Woodwart, shown here, occurs only infrequently.

As mentioned above, it is growing here on a stump; given that this species grows on dead wood, it is not surprising that I was unable to locate any other specimens on the surrounding (living) trees.
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Source From geograph.org.uk
Author Lairich Rig
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Lairich Rig / Birch Woodwart (Hypoxylon multiforme) / 
Lairich Rig / Birch Woodwart (Hypoxylon multiforme)
Camera location55° 58′ 20.1″ N, 4° 35′ 59″ W  Heading=292° Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo
Object location55° 58′ 20.1″ N, 4° 35′ 59″ W  Heading=292° Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
Attribution: Lairich Rig
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current16:41, 25 February 2011Thumbnail for version as of 16:41, 25 February 2011640 × 480 (75 KB)GeographBot (talk | contribs)== {{int:filedesc}} == {{Information |description={{en|1=Birch Woodwart (Hypoxylon multiforme) There is a stand of birch trees at this location, where the soil is generally rather wet and acidic. The fruiting bodies of Beech Woodwart, shown here growing o

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