Rigidoporous?

[scottythepinetree]

Rigidoporous (I think) found on a mature oak in a public park within striking distance of pathways? Am I correct in my ID? And if so, how detrimental is this likely to be to the future of this tree?

 

It's a lovely tree. Still very vigorous with very little deadwood in the crown. No signs of dieback or any other signs of stress.

[David Humphries]

I think this is the oak bracket (Psuedoinonotus dryadeus)

 

Can't be 100% without a closer image or shot of the flesh, tubes and/pores

 

 

 

Have a look at the fungi directory page

 

http://arbtalk.co.uk/forum/tree-fungi-70.html

 

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[Kveldssanger]

My first impression was P. dryadeus, too. If it is, that's perhaps one cause of the marked buttressing. Is it the most 'hazardous' fungus in the world? Probably not. Best shot is to PICUS the tree or run a Resistograph through it. From a tree health perspective, I'd suggest the former. It'd be largely unwise to fell / prune / do nothing without such information, given where it is.