What caused this

[Tony Croft aka hamadryad]

mematodes causing cambium to grow in a disrupted way

[Tony Croft aka hamadryad]

mematodes causing cambium to grow in a disrupted way?

[Bundle 2]

Just wondering what the cause of this is? Never seen anything like it before?

 

Same thing caused this too I reckon.

[Tony Croft aka hamadryad]

I suspect that some of these wierd growths are started by fibre buckles and then progress somehow to some form of disturbed cambium activity, like the burr oaks, fistulina gets in causes local kinking, this then becomes burred and is potentialy a strategy for making progression of the hyphea difficult within the complex pattern of walls, a stage after that appears to be specialised insoculations that form new skins over the decrepid and hollowing trunk.

 

iether way these old lumps and bumps make for some interesting photos!