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Fungus

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Everything posted by Fungus

  1. Fungus
  2. Fungus
    Rob, A bolete from the Xerocomus chrysenteron s.l. group, maybe an atypical X. communis, which is associated with lime and poplar.
  3. Fungus
    Andrew, See : Agrocybe cylindracea.
  4. Fungus
    Andrew, Agrocybe cylindracea (= A. aegerita), a species that mostly grows on trunks and stumps of (pollarded) poplar or willow.
  5. Fungus
    And on top of that, female trees take up more space, because they have much wider "hips" compared to the "slim" males and you can have a dramatic slippery slide on the fruits if you step on them. In Paris, in autumn a part of the Champs Elysée is fenced off to prevent people from sliding on the fruits of a female Gingko from the end of the 19th century. And Ginkgo's are known to be quite resistent to air pollution (by cars) and "grow happily" on any type of soil.
  6. Fungus
    David, Today I bought the "pocket size camera" Canon Powershot SX230 HS 12.1 Megapixels 28 mm wide 14x zoom with GPS. Great picture quality coming from it .
  7. Fungus
    It seems far to rough and irregular for Diatrype stigma, besides D. stigma is a saprotrophic dead cambium decayer, which only shows itself after it throws off the bark, i.e. doesn't fruit on the outside of the bark. If it is a Pyrenomycete with ostioles and perithecia, it could be a Hypoxylon species or K. deusta.
  8. Fungus
    How about a male Ginkgo biloba ?
  9. Fungus
    I'm sorry to say, but JFL's article lacks thorough assessment and documentation of a sufficient case load of trees affected by P. fraxinea and microscopical evidence of the type of wood rot to meet up to the necessary scientific standards and validity making a "condemnation" of P. fraxinea attacked trees plausible. Besides, he doesn't include Oxiporus populinus in his analysis, a look-a-like of P. fraxinea with the same colour of context/trama and spores, which only can be 100 % excluded by measuring the spores, see this post.
  10. Fungus
    Did you notice the crumbling black charcoal like bark, as if the trunk's base has been set on fire ?
  11. Fungus
    David, Yes as far as Meripilus giganteus, Pholiota squarrosa, Oxyporus populinus and Abortiporus biennis are concerned, no with respect to P. fraxinea, which to my knowledge has not (yet) been documented from Populus, see my question concerning perreniopoplarphenia.
  12. Fungus
    David, Did you microscopically check the spores : Perenniporia fraxinea 6,5-8,5 x 5-6,5 µm versus Oxiporus populinus 3,5-4,5 x 3-4,5 µm and/or the reaction of the in both species cream to pale wood coloured trama/context with Melzer's reagens, which is brown for P. fraxinea versus no change of colour for O. populinus ?
  13. Fungus
    David, & = Psathyrella spadicea ?
  14. Fungus
    With in the third photo the entrance of a woodpecker's nesting hole, indicating the brown rot has completely hollowed the trunk or branch at that level for several decimetres downwards. And did you also monitor the tree species specific ectomycorrhizal symbionts (Russula, Cortinarius, Tricholoma), which according to the life cycle of this willow should have been present during the last 3 years ?
  15. Fungus
    David, You're rightfully alarmed, because to me this looks like (partially sterile) panic fruiting.
  16. Fungus
    The explanation is not found in the fungus, but in both Platanus and Robinia not being able to regenerate new major roots to compensate for the loss of the decayed buttresses, roots or the root plate needed for stability, which is also the case with infections of both tree species with Meripilus giganteus and Pholiota squarrosa.
  17. Fungus
    Matt, Only based on photo's, I cannot be the judge of that, but you can tell your TO, that Coprinus species belonging to the C. micaceus s.l. group are secondary decomposers of decayed wood, i.e. indicators of other saprotrophic macrofungi still being or having been active. So I would look for signs of other white rotters.
  18. Fungus
    Matt, Coprinus micaceus s.l. is a superficial secondary white rotter, which is part of the succession phase of dead wood, which already has been partially to almost completely decomposed by other saprobiotic fungi.
  19. Fungus
    So do I , but bear in mind, that f.i. Robinia or Platanus and P. fraxinea is a complete different story.
  20. Fungus
    Andy, First question to be answered : is it a rusty brown sporulating perennial Ganoderma or the white spores producing Perenniporia fraxinea ?
  21. Fungus
    Janey & David, And your reaction to this post is ?
  22. Fungus
    Old annual brackets of Inonotus hispidus.
  23. Fungus
    Rob, The last phenomenon is caused by the mycelium and/or rhizomorphs of a parasitic Armillaria species, which also can be responsible for the splitting and cracking if it is decomposing the central wood as a an optional saprotrophic white rotter too, changing the flexibility/stiffness ratio of the trunk.
  24. Fungus
    Rob, First phase of infection of the cambium with wound tissue or callus trying to overgrow and close the necrosis caused by the bacteria.
  25. Fungus
    Looked for white mycelium plates and/or black rhizomorphs or plaques of a parasitic Armillaria species yet ?

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