Seen a fair bit of this over the years on various species, the most
striking being on a Beech at Redstone Cemetery in Redhill, Surrey. The
whole tree bole which is about 80cm diameter and many of the branches
were affected. It looked just like an elephants leg. Someone suggested
that this can happen in the response to extensive white rot where the
outer shell collapses down on itself over long time periods.
Ron.
-----Original Message-----
From: rupertbaker [mailto:rupert_baker@xxxxxxxx.co.uk]
Sent: 26 March 2009 11:00
To: UK Tree Care
Subject: Aesculus with elephantiasis
Anyone seen this effect before - seen on two mature Aesculus hippo (not
x
carnea) in Devon. Occurs on terminal ends of branches on twigs 10-40mm
diameter before being inflated by the condition. Occurs mostly in upper
crown, but also on low laterals. There is a small lesion with
black/brown ooze on the distal end of the swelling. The last 3 years of
wood is normal white as per Aesculus; internal to that it is a rich
chestnut-brown. The swelling appears to have happened to the twig's
growth in early years, and is being gently accentuated by each annual
ring. Photo shows shoot sectioned; second email has 2nd photo of whole
shoot
Any suggestions'd be welcomed. The trees appear reasonably healthy in
other respects.
Rupert
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