beech tree bleeding canker?

[Fungus]

But the mycelium isnt in the xylem ? its in the layer between bark (epidermal tissues) and the xylem, hence the cambial death?

 

Correct, it's in the epidermal tissues including the phloem, which causes the cambium to die and blackening foamy exudates to flux down and out from the phloem through leakage spots in the bark (and bark shedding), but I was asking where the orange exudate comes from.

Edited November 1, 2011 by Fungus

[Tony Croft aka hamadryad]

Correct, it's in the epidermal tissues including the phloem, which causes the cambium to die and blackening foamy exudates to flux down and out from the phloem through leakage spots in the bark (and bark shedding), but I was asking where the orange exudate comes from.

 

argh im being led to a conclusion, I like it.

 

so i am asuming that your leading me to conclude that your nectria is causing these exudates (orange) after the tissues have created dysfunction and triggered the endophyte nectria? just guessing!

[Fungus]

nectria is causing these exudates (orange) after the tissues have created dysfunction and triggered the endophyte nectria?

 

Could be, could also be just fluids coming up from the roots via the xylem turning orange when exposed to oxygen, like - as before mentioned - can be seen in damaged or cut Betula, Prunus and Acer.

[rootstoshoots]

This looks like beech bark disease, we have this here in the states, bleeding and the white on the bark.

[rootstoshoots]

I am sending a picture and literature. see what you think?

[rootstoshoots]

literature got lost hold on

[rootstoshoots]

can not send sorry

[Fungus]

looks like beech bark disease

 

Caused by what pathogen (latin name) ?

[rootstoshoots]

nectria coccinea let me know what you think Gerrit

[Fungus]

Nectria coccinea ...

 

... or Nectria ditissima combined with Armillaria mellea, as I suggested before.