Fungus ID Please.

[Jaffa151]

Can anyone identify these Bracket Fungi growing on two Robinia pseudoacacia in a private estate in Wandsworth, London - and advise about the implications to the health of the trees. We have been told that they need to be destroyed because they are diseased. Pics attached.

Many Thanks.

Jeff.

[David Humphries]

Hello Jeff

 

I think it's likely to be Perenniporia fraxinia

 

Worth taking a sliced wedge out of the rim edge to have a look at the felsh & tube layer.

 

These features would help to determine the Id from Rigidoporus ulmarius (which can look similar)

 

 

 

Perenniporia fraxinea creates a white rot in the wood volumes it infects, which degrades the lignin within the wood.

 

This can lead to an infected tree collapsing at the basal region.

 

That's the bare bones of it, but probably best not to take someones say so off the interent, it's always prudent to take professional advise from someone who has seen the tree in its context.

 

Trees naturally decay as they age, but with appropriate management (where applicable) can be maintained to keep their aesthetic & ecological place within their environment.

 

I manage a number of (reduced) trees that have Perenniporia

 

 

.

[Jaffa151]

Hi David,

 

Thanks so much for replying to my query so promptly. I've looked up Perenniporia and Rigidoporous and see what you mean about the similarities. I'm not an expert on the fungi but I think you were spot on with Perenniporia. I will attach a couple more pics of a cross section of the bracket showing the tube layer (on another thread - not sure how to do it in this reply) just so there's no doubt. I'm more than happy for you to add all these photos to your 'Fungi Directory' should you wish.

 

I don't think these trees should be given the 'kiss of death' ... I'm all in favour of managing them for as long as possible.

 

Jeff.

[Jaffa151]

Cross section of the bracket of P. fraxinia for the information of David Humphries.

[David Humphries]

Yep, Perenniporia fraxinea.

 

Nice shots

 

 

 

.

[Jaffa151]

Thanks David ... really appreciate your assistance.

Jeff.

[nepia]

Yep, Perenniporia fraxinea.

 

Nice shots

 

 

 

.

 

 

 

Good shots indeed. David, how would similar shots of Rigidiporus have differed? I've looked at the (excellent) pics in the Directory but they're not as close up as these.

[sean]

Good shots indeed. David, how would similar shots of Rigidiporus have differed? I've looked at the (excellent) pics in the Directory but they're not as close up as these.

 

See post 2

 

http://arbtalk.co.uk/forum/fungi-pictures/6205-rigidoporus-ulmarius.html

[nepia]

See post 2

 

http://arbtalk.co.uk/forum/fungi-pictures/6205-rigidoporus-ulmarius.html

 

 

 

 

I have as well as the pics I refer to in the Directory but I can't compare/contrast anything there with the excellent close ups by Jaffa151 of a section through Perenniporia.