Root Collar fungus ID

[rfwoodvt]

Hi!

A customer has found the fruiting body on the root flare of a couple of Quercus rubra in Vermont. I have not done any checking of the root collar to see if there is loose bark or not and therefore have not seen if there is any "shoestring" growth underneath.

Hoping to get an off the cuff ID of the fungus by the fruiting body.

All help is appreciated!

 

[KTSmith]

Not much to go on...Doubt if there will be shoestrings (Armillaria) or cords (Hypholoma).
What is the fertile surface like? If pored, how about Ischnoderma? Maybe not the common I. resinosum, but I think there are others.
If the fertile surface has teeth, how about Climacodon?
I'm not sure if off-the-cuff ID's have any value, but that's a start.

 

[willbranch]

Grifola ??? Hen of the woods maybe

 

[guymayor]

[ QUOTE ]
Grifola ??? Hen of the woods maybe

[/ QUOTE ]that one is more rounded; wrong cuff?

this one resembles what i've ID'd as Bondarziewia berkeleyi. i pulled off a 19-pound conk from a white oak two years ago. the last 2 years they've been lighter, so maybe the treeatments are working--quantified tree risk management!?

there is not extensive decay beyond the conk site. going on 5 years managing the tree.

 

[KTSmith]

I like Bondarzewia if the pores are small and tightly packed, as I recall.
In classes, this is an easy one to call with a microscope. The spores have short, wide spines and ridges. I know, not much help here.

 

[guymayor]

that does help me wiht mine though; describes it well. this is the one and only Bb infection i have worked on and we are pulling out all the stops. the client bought an infrared lamp to shine on the infected area on this ginormous tree, almost 100' x 100'.

one fungus book--oster? says it is virulent, but mopst of the base of this tree is quite solid, so far....

 

[rfwoodvt]

OK so lets assume then that it is Bondarzewia. It is associated with butt rot and the question becomes what is the prognosis for the tree.

There are two in the 30+ inch DBH range that have this fungus at the base of the tree.

Sounding the tree gives a solid resonation but I also have seen that before only to have the butt fail miserably.

butt rot around here usually goes unnoticed or untended to failure. These are multi-million dollar homes around these trees so I'm up for all mitigation suggestions, but more importantly why you would choose one mitigation over another.

ThanX for the continued input.