Polyporus squamosus - extensive white rot.

Fairly dramatic large Sycamore failure today.

Wasn't too sure on the culprit until we discovered the desicating fruit bodies.

Normally associated with cavaties and small zones associated with a wound.

This one has travelled well up into the principal branch, leaving the sap wood relatively intact.

This is the biggest failure due to P. squamosus that I've come across to date.

The failure.......

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the decay.......

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the culprit.........

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really good pics and very interesting, I appreciate you posting pics like this to keep me learning when i'm not at uni!

cheers ciaran glyde

Nice pics david i Had the same happen on a sycamore the other day, will made a good pollard

Nice pics david i Had the same happen on a sycamore the other day, will made a good pollard

Same decay Ben ?

Any shots?

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Fairly dramatic large Sycamore failure today. This is the biggest failure due to P. squamosus that I've come across to date. The failure.......

David,

... which IME is rather common in Acer and in Aesculus, Tilia and Ulmus too.

David,

... which IME is rather common in Acer and in Aesculus, Tilia and Ulmus too.

Not a rareity here either Gerrit, though the extent of decay Is what I have found to be suprising. Possibly travelling vertically perhaps 4-5m up the target branch.

Although there has been a significantly strong wind force here today, there is ofcourse a reduced sail effect due to lack of leaves.

D. Lonsdale describes the strategy as potentialy either sapwood or ripewood decay.

in this particular instance the sapwood appears relatively intact, all be it of small residual thickness.

What are your experiences of P. squamosus in terms wood decay strategy?

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1. Not a rareity here either Gerrit, though the extent of decay Is what I have found to be suprising.

2. D. Lonsdale describes the strategy as potentialy either sapwood or ripewood decay. In this particular instance the sapwood appears relatively intact, all be it of small residual thickness. What are your experiences of P. squamosus in terms wood decay strategy ?

1. I meant it being rather common with respect to the extent of wood decay in the four tree species.

2. The same as Lonsdale's, although I find it mostly restricted to dead heartwood and not invading (living) sapwood.

Hi David :001_smile:Here is a few from mine that had popyporus squamosus. i posted on a thread called sycamore pollard the other week