Leaf disorders

[jomoco]

I wonder if that leaf's vein has a higher inner psi during its highest sap flow season?

 

Jomoco

[Ben H]

Evening,

 

The other day while taking down a mature Copper Beech tree I noticed some of the leaves had a disorder which I couldn't place. I couldn't find it in the books I have (It may be my poor book skills) so thought I would turn to Arbtalk for the answer.

 

Thanks for your help

 

Ben

[Ben H]

BUMP

 

 

 

 

 

 

 

 

[David Humphries]

Hard to be of great help with that image tbh Ben

 

Do you have other shots, perhaps a canopy context shot and also a shot of the top surface of the leaf ?

 

What was its growing environment like?

 

Possible that the beech may be deficient of necessary micronutrients like manganese or iron. But i'm not entirely convinced of that.

 

 

 

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[Lee Winger]

Wind damage, causing buckling of primary individual leaf support veins?

 

Jomoco

 

 

That was my first thought as well, no mini tornadoes David?

[David Humphries]

Not that I'm aware of Lee.

 

I think there would have been whole detached leaflets and debris if there had been a wind event.

 

FR not ruling out abiotic but they are still undecided on the culprit at this stage.

 

 

 

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[MrPaul]

have they came up with any theories thus far?

 

[David Humphries]

have they came up with any theories thus far?

 

The last contact I had with Alice Holt they thought that this was some form of abiotic factor - hail being a considered guess.

 

I'm not entirely convinced and will be looking at these trees closely during the same period next year.

 

Thanks for the bump.

 

 

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[David Humphries]

Lime tree with significant levels of feeding on the undersides of the leaves.

 

In the absence of any culprits at the table I think this may be Caliroa annulipes (Slug Sawfly) usualy associated with quercus but known to have a taste for tilia also.

 

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[Gary Prentice]

That's not uncommon up here David, although tbh I've never investigated any further to identify the culprit:blushing:

 

I assume you never got to the bottom of the H.C problem? I thought at the time that due to the localisation the cause was climatic - but again it's only a guess.

 

Edit: not uncommon on lime