Fungus
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Everything posted by Fungus
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The first picture shows young fruitbodies of Trametes versicolor combined with mycelial felts and plaques of an Armillaria species. Both species produce simultaneous white rot.
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Phaeolus schweinitzii is more invasive in Pseudotsuga and Larix than in Pinus and Picea. In the first two tree species the brown rot in the trunk's base, buttresses and major roots develops quickly making the tree vulnerable for windthrow or breaking within 10 to 15 years. Often there are no signs of dieback or low crown density, because the mycelium doesn't invade much living tissues in the first phase of the infection. Sometimes the only symptom preluding the future appearance of brackets is a deformation of the bark comparable to that on Douglas (see photo). Also see my album on Phaeolus schweinitzii. ---
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Rob, 1. No, it only deforms living tissues and doesn't affect stability. 2. Sometimes, although it's a tough one to compete with.
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Rob, This type of bark canker is either caused by Nectria coccinea, which is associated with C. fagisuga, or by another Nectria species.
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Simultaneous white rot caused by Fomes fomentarius inside the split fork and both trunks of a bifurcated beech. ---
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Is this tree Normal or a ticking bomb?
Fungus replied to Parametrics's question in Homeowners Tree Advice Forum
Which is an indication for the fungi either being (necrotrophic) parasitic or saprotrophic and with P. schweinitzii not only undermining the trunk's base, but also brown rotting the buttresses and major roots, I would not hestitate to fell the tree before it gets windthrown during a storm. -
No, the water table is this high because of recent continuous rainfall for over a week. Normally the water table is very low, because the woodland is on sandy soil and the tree are on heightened stands.
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New documentation of the split beech from my yesterday's visit to the site. ---
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Documentation from the same woodland site I've been monitoring for some years of a beech, that recently broke in half taking down another beech in its fall. The lower half of the trunk is covered with anamorphs and teleomorphs of K. deusta. The upper half has several 5 tot 15 years old perennial brackets of F. fomentarius. The oldest bracket is still attached to the part of the trunk that lies below the water surface. Recently, a woodpecker started creating a nesting whole. The part of the trunk above the water surface shows an intensive white rot by F. fomentarius, of which the mycelium not only has decomposed the wood in the split, but also the greater part of the heart wood of both trunks of the bifurcated tree. ---
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A Quercus robur with two "exploded" necrotic cankers side by side caused by F. hepatica, that have partially been overgrown from both sides, with an extensive zone of smooth bark above the canker to the right caused by a (secundary) infection with Armillaria ostoyae. ---
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Another example of a woodpecker testing a tree. In this case, the living tissues of a Quercus robur are infected by the mycelium and/or plaques or rhizomorphs of Armillaria ostoyae causing the development of smooth bark looking like the bark of Quercus rubra. The woodpecker soon gave up after finding out that the wood still was too hard to penetrate. ---
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In that case, I would have expected a decolouration (white rot) of the heart wood of the branch.
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IME coppiced willows have a much higher ecological value, because they provide in a lot more niches for other organisms than pollarded willows.
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Managing Trees with Decay & Dysfunction
Fungus replied to David Humphries's topic in Tree health care
That's not the point, the point is that this cluster of six or seven 6.000 year old clones has to compete with the genetically identical cluster of 70 clones of Quercus palmeri (13.000 years old) and the 47.000 genetically identical clones of Populus tremelloides of at least 80.000 years old. -
Worldwide there are even more than 14, but from the Western European continent only six species are documented.
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Apart from D. concentrica, there are five other European species of Daldinia that live on different tree hosts, so without microscopical check, this can be another species. And three of these five other Daldinia species are exclusive or have a strong preference for burned wood, especially for that of birch.
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Managing Trees with Decay & Dysfunction
Fungus replied to David Humphries's topic in Tree health care
The picture shows half a circle or cluster of clones, not a solitary tree. -
We Dutch have a long tradition of coppicing willows, we never pollard willows with the exception of weeping willows. I've seen severely affected willows fail under normal weather conditions or in mild storms.
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The first one could be Oudemansiella mucida, as to the left there are branches present that already are dead. The second is probably caused by torsion and overload, not by a fungus.
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Phellinus ignarius is one of the perennial bracket fungi that play an important role in the bringing down of older willows, after which regeneration from the remaining trunk parts takes place. IME it's very invasive and associated with high risks of breaking of the tree and/or its crown. Would coppicing the tree be a possibility ?
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In plane, this type of wood decay is typical of Inonotus hispidus, because its mycelium follows the starch rich radial rays outside in and inside out.
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Managing Trees with Decay & Dysfunction
Fungus replied to David Humphries's topic in Tree health care
Tony, So now an advert on Facebook has become a reliable source of scientific information ? Did you read the claims of this producer and retailer of olive oil, premium honey and facial creams : "... was known since antiquity as the source of the olive branch that Noah's dove brought back to the ark ushering the end of the deluge (or delusion ?). Experts (who, names please) believe them to be the oldest trees on earth (even if they are 6.000 years old, not true), and possibly the oldest living biological (as opposed to what non-biological life-forms ?) life-form on our planet" (utter nonsense). Do they also sell replica's of Noah's dove or pieces of wood of Noah's ark ? -
What about Inonotus hispidus ?
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Not that uncommon on the continent. This birch has a secondary infection with Pleurotus ostreatus too. ---
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Could well be, but were there no necrotric cambium lesions present on the sides of the branch where the infection seems to have invaded it ?
