Fungi identification

[migs]

Evening all, 

 

I've been having a hard time trying to identify what this fungi may be, any ideas?

 

It was found growing on a horse chestnut in decline. The tree has had some crown reductions in the past and now has a significant amount of deadwood throughout. The fungi is growing almost the entire circumference at the base of the tree resupinately almost as if has been melted in places. 

 

There are some areas where it looks like young ganoderma in formation possibly even polypore. 

 

I did a Google search and the closest I found was a green cheese polypore?? Doesn't sound like something that grows in this this country to be honest.

 

Any help would be appreciated.

 

Thanks 

[Alinicoll]

I'd have a look a Rigidoporus. Try cutting a wedge if you can to look at the flesh and tube colours.

[trotter251]

I'd be looking at either Rigidoporus or Perenniporia 

[migs]

Yeah, I think it may well be rigidoporus. I will revisit at a later date and see how it develops...thanks for the suggestions