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Fungus

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Everything posted by Fungus

  1. Fungus
    Tony, Without checking the spores under the microscope, I am not convinced it is G. australe.
  2. Fungus
    Stropharia (= Psilocybe) semiglobata.
  3. Fungus
    Originally indigenous in Australia and just as Clathrus archeri, "exported" to Europe with living sheep or sheep wool infected with spores.
  4. Fungus
    Apart from this effect, the severed roots will loose their protection against parasites by antibiotics and fungicides producing mycorrhizal symbionts, which makes them f.i. vulnerable for infection with rhizomorphs of parasitic Armillaria species, which can detect damaged roots by the growing hormones they secrete over a distance of up to one metre.
  5. Fungus
    You (and your barbecue) are hereby invited to come to the western parts of The Netherlands, where we meanwhile have over a hundred thousand (and still counting and spreading) of these in the parks of Amsterdam, The Hague and Rotterdam, threatening the reproduction of indigenous birds and bats by taking over the cavities in trees, the birds and bats used to nest, breed and sleep in.
  6. Fungus
    Nice bit of work . I assume the whitish/greyish brackets on one branch are of D. confragosa ? And do you not fear the remaining branches of the trees will be used as climbing "ladders" by children in risk of falling down because of breaking off of the already partially decomposed branches ?
  7. Fungus
    No, I didn't. Nowadays the official scientific name of a new species has to be given by an "outside" expert, who in this case ignored all the suggestions done by me and other Dutch mycologists and decided in favour of the Latin and Dutch name she "invented", which took her 3 years after I presented the new species to the assembly of Dutch mycologists and published it as Agrocybe spec. on my CD-rom.
  8. Fungus
    David, Are you planning on monitoring and documenting the succession of the different dead wood species of fungi on these willows ?
  9. Fungus
    To the wrinkles or veins on the surface of the cap.
  10. Fungus
    Rob, Yes, they did, just as the heaps of wood chips, on top of which I - in 1999 - discovered a new species for the world : Agrocybe rivulosa. Inside the heaps at about 30 centimetres depth, the temperature was up to 70 degrees Celsius. ---
  11. Fungus
    Rob, I would need a much closer look at the black layer to assess whether it is fungal or something else. It doesn't seem to be K. deusta, which has a smoother surface, but if it has a stroma with ostioles and perithecia, it could be another Sphaeriales such as a crust-like Hypoxylon or Diatrype species.
  12. Fungus
    Rob, One of the many Coprinus species growing on compost heaps : no microscope, no name .
  13. Fungus
    Rob, Trametes versicolor ?
  14. Fungus
    I only know of problems with the validity of Picus readings with soft rotters like K. deusta on Fagus and Tilia, with various simultaneous white rotters on Acer, Platanus and Aesculus and with white rotters with selective delignification such as Ganoderma australe and G. resinaceum on Acer, Aesculus, Ulmus, Populus, Salix, Tilia and Quercus rubra.
  15. Fungus
    Correct .
  16. Fungus

    Rigidoporus

    Fungus replied to sean's topic in Fungi Pictures

    Which could give that Gerrit bloke a good reason to no longer look at that sean bloke's fungi .
  17. Fungus
    Matt, Looking at the first photo, I would sooner think of one of the many pioneer white rotters active on/in oak branches, such as Vuilleminia comedens or Peniophora quercina and/or Tremella mesenterica as a parasite on the mycelium of the Peniophora, which cause the bark to fall off and then (partially) white rot the dead wood of the branches before they fall to the ground.
  18. Fungus

    Rigidoporus

    Fungus replied to sean's topic in Fungi Pictures

    .
  19. Fungus

    Rigidoporus

    Fungus replied to sean's topic in Fungi Pictures

    In The Netherlands (and according to R & G, elswhere in Europe), the host would be the problem, because R. ulmarius is not (yet) documented from Aesculus, and P. fraxinea is, apart from Fraxinus, not only known from Aesculus and Ulmus, but also from Castanea, Celtis, Eucalyptus, Fagus, Gymnocladus, Juglans, Olea, Malus, Platanus, Populus, Prunus, Robinia, Quercus and Salix. So it is not that I don't believe you, but "for science sake" it's necessary to at least once microscopically check and document it and store material in an official herbarium in order to prevent a future debate on the validity of the combination of fungus and host.
  20. Fungus
    Cheers , looks great, I'll follow this thread with even more interest then.
  21. Fungus
    As a tomograph reading is not always reliable in detecting white rot in the trunk of tree species such as Aeasculus, Platanus and Acer, I would advise a pulling test.
  22. Fungus

    Rigidoporus

    Fungus replied to sean's topic in Fungi Pictures

    David, Although the photo documentation looks quite convincing , did you, apart from the colour differences of the flesh and tubes, as Janey cited, ever check the microscopical features of R. ulmarius against those of P. fraxinea ?
  23. Fungus
    Wow, a saddle, which even can hold Hamadryad ?
  24. Fungus
    Neither have I, but taking the wood quality of Acer into account, my prediction would be, that it will turn out to be quite detrimental to (the stability and/or condition of) the tree.
  25. Fungus

    Rigidoporus

    Fungus replied to sean's topic in Fungi Pictures

    David, Both, as it was not yet documented from Aesculus and not documented from cavities at height on any tree species, because it is known to be a root (plate) and buttresses rotter of Ulmus (and sometimes of Quercus, Platanus, Populus and Corylus).

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