Mystery Yew fungus

[sloth]

Kevin

Please don't take this negatively, but it would be beneficial to understand why you think this is A. laevigatum, as all the (Taxus) cases I have seen have had an associated strip canker and although quite common, it rarely kills large portions of the main stem like this.

 

Best wishes

Jonny

Not taken negatively at all:

I thought it would probably be A.l due to host, location and its apearance in the photo. I've seen it plenty of times without the strip canker. Agreed it rarely spreads around the stem very far, however, I believe it can be saprobic on portions which have died through other means. Drought or waterlogged soil perhaps?

Also I can't think of any other fungi which have a taste for yew and take this form on the stem.

So it is entirely presumption, and with just one photo to go on that would be my best guess. If you think it's unlikely do you have any other suggestions, I'd be interested in your thoughts...

[JonnyVine]

Not taken negatively at all:

I thought it would probably be A.l due to host, location and its apearance in the photo. I've seen it plenty of times without the strip canker. Agreed it rarely spreads around the stem very far, however, I believe it can be saprobic on portions which have died through other means. Drought or waterlogged soil perhaps?

Also I can't think of any other fungi which have a taste for yew and take this form on the stem.

So it is entirely presumption, and with just one photo to go on that would be my best guess. If you think it's unlikely do you have any other suggestions, I'd be interested in your thoughts...

 

Kevin

Sorry for the late reply, your diagnosis, as I had fully expected, makes total sense and my reason for asking is that most of the cases of A. laevigatum that I have seen have been on western red Cedar, I have only seen three (confirmed) cases on Yew and that white deposit dosen't look like A. leavigatum from here, although its in the right place? Also, given the amount of "mycelium" present, if it was A. laevigatum it would indicate quite a late stage of colonisation and I would have expected to see a bark dissorder of some description? Loose, dead etc?

 

I have always ascociated A. laevigatum with heavy pruning etc and unfortunately there are no shots of the rest of the tree to confirm this, however, as you mentioned, with all the wet weather and Taxus's sensitivity to waterlogging would stress the tree enough I guess.

 

My Interest is borne of Taxus making up quite a large percentage of the trees on my patch, both old and young so all input regarding the species is of great value to me and it would be nice to have the opportunity to view these trees in person.

 

Once again, I genuinely value your opinion regardless of past disagreements Kevin and I would appreciate anyones views particularly on the alleged mycelium

 

Kind regards

Jonny

[daltontrees]

Zero pruning on the third tree. Linn Park Glasgow, 20m from the stables. Will try and get back there in a couple of months.

[ADB328]

can someone tell me what anamorphic fungi is please?

[One Buck]

Here ya go.

 

Arbtalk.co.uk - Glossary

[ADB328]

Here ya go.

 

Arbtalk.co.uk - Glossary

 

Much Appreciated. Now does this mean that the actual fungi form is different as in if a stool it would not appear as a stool but in fact a generic shape?

 

Thanks

[Tony Croft aka hamadryad]

anamorphic is a type of fruit body that produces asexual spores (self cloning) rather than a sexual fruitbody forming perfect spores

[sinfin]

could be way off the mark with this but the op photos resemble Capnobotrys dingleyae (syn Hormiscium pinophylum/ Antennaria pinophyla )

 

which has been recorded on Yew before, and seems to occur more often in the north of the country from what i can make out,

[sloth]

Looks like a distinct possibility. Welcome to Arbtalk

[Tony Croft aka hamadryad]

could be way off the mark with this but the op photos resemble Capnobotrys dingleyae (syn Hormiscium pinophylum/ Antennaria pinophyla )

 

which has been recorded on Yew before, and seems to occur more often in the north of the country from what i can make out,

 

 

Awesome post!

 

Took me a while to track down an image, reckon thats the best shout so far:thumbup1:

 

You obviously know your onions:thumbup: