I've seen this in October 2016 on Corsica (Island of France):

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I would guess each one is about 5cm - 15cm in diameter. Obviously, they come in small groups.

enter image description here

  • 3
    $\begingroup$ It would be nice to see how they look under the hat, and also the stem. $\endgroup$
    – BioGeo
    Dec 21 '16 at 13:41
  • $\begingroup$ Do you have a picture of the stem or underside?? $\endgroup$ Feb 24 '17 at 4:09
  • $\begingroup$ @theforestecologist No. $\endgroup$ Feb 24 '17 at 5:23

Most fungi need to be studied under a microscope to determine a species. I think this belongs to the genus of Pholiota. I couldn't find an English name, if I translate the Dutch name, it would be 'Bundle mushroom'. This name refers to the fact that they always grow in groups, usually on (dead) trees or trunks.

At first look thought this was a Honey fungus, but these are parasitic so usually don't grow on dead wood.

  • 1
    $\begingroup$ From the article you've linked: 'Because Armillaria is a facultative saprophyte, it also feeds from dead plant material, allowing it to kill its host, unlike parasites that must moderate their growth to avoid host death.' $\endgroup$
    – Arsak
    Mar 21 '17 at 19:17
  • $\begingroup$ Pholiota aurivella fieldguide.wardial.me/Mushroom%20pages/falllog.htm $\endgroup$ Feb 15 '18 at 17:53

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