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Odd willow stem...


sloth
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As above, strange stem form on salix at Colchester zoo. It's almost like its grown against something long since removed, causing a flat, circular depression in the stem, with 'ears'. But it hasn't. Not right for a target canker either, no necrosis. Looks fairly normal when viewed from the other side.

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Apologies for poor quality phone pics and finger blur! So, any suggestions?

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Maybe, although I'd expect to see fruit bodies by the time symptoms are so pronounced. Also (I didn't get up close, the wife finds me embarrassing enough as it is :rolleyes: ) Butin says it only forms the canker on Quercus. I think the bark in the centre of the depression was still alive as well. I have a gold card so will be there again some point, will have a closer look :thumbup:

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