Rigidoporus ulmarius

[David Humphries]

Nice shots Steve, would agree that they are Rigi for sure

 

 

 

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[stevelucocq]

Hi,

 

A few pictures from today that I think have all the signs of R.ulmarius. The bracket is large and has been there for many years. It is situated below a large horse chestnut limb in a high use area. I know it produces a friable brown rot but any other info on it would be good. Also I noticed in various books that this fungus is found on the buttress area and causes root and buttress rot but this is a good 3 metres up. Any ideas what to do with the limb would be good, I was thinking about reducing it by at least half?

 

Thanks Steve

[stevelucocq]

Hmm, just looking back at other pictures and maybe not so sure now as the tubes are not brown but they are starting to turn, maybe an early reforming FB???

Edited June 29, 2009 by stevelucocq

[Giles Hill]

Hmm, just looking back at other pictures and maybe not so sure now as the tubes are not brown but they are starting to turn, maybe an early reforming FB???

 

Looking at David's pics of the Rigidoporus and the ones on this thread:

 

http://arbtalk.co.uk/forum/tree-health-care/8214-rigidoporus-perenniporia.html

 

You can see the brown pores from previous years appearing as stripes in the cross-section.

 

I'm wondering if your last one is the Perenniporia.

[stevelucocq]

 

I'm wondering if your last one is the Perenniporia.

 

Hmm yeah I am unsure as getting mixed signals of what this fungus is, any other help??

 

Have you been up to much since the exam? I am trying to keep the momentum going and scrub up on pests, disorders and diseases.

 

Cheers Steve

[Giles Hill]

Hi Steve, to be honest I haven't looked at the notes since the exam. I'm waiting to get the results back before I look again - I'll then either revise for the field exercise, or a re-sit!

 

That said, I find most things arb interesting, particulalry if they have some relevance to my day job - parts of the course certainly don't! I'm learning little bits regularly.

 

Talking of pest and diseases, I originally found this forum doing a search for such things. (Don't know if that's good or bad.)

[David Humphries]

Caught this Rigi out of the corner of my eye as I drove past this HC yesterday.

Thought it was a Gano at first sight, then noted the few remaining 'white' spores underneath, only after I had cleaned it up for the photo's and swept away most of the spore without realising

Sneaky little Fb, trying to hide amongst the epi

 

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[David Humphries]

A couple of sizable Rigidoporus brackets on a Chestnut.

Usually seen to be anything between 12 - 50cm across.

These two beasts are 44 & 64cm respectively.

 

You can see the classic Id traits - white spores & orange tube layer in shot 1

 

This Tree suffered extensive storm damage in '87.

Is now host to very heavy regrowth.

Leaning away from main target, but will look to assess the level of brown rot and possibly reduce depending on findings.

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[sean]

when you come into the park this week David check out the base of the Horse Chestnut just before going over the cattle grid into holly lodge....There's a whopper Rigidiporus! Wee slice missing however.

[David Humphries]

Not coming over to Richmond till second or third week in March now Sean.

Found it a little difficult to sync three or four diaries together.

 

I'll keep an eye open for the Rigi.

 

 

Bit hungry were ya?

 

 

 

 

 

 

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