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03-02-2026 20:44

Zetti Mario

When I first saw this white mould on an Agaricus s

18-08-2025 15:07

Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

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Margot en Geert Vullings

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Andgelo Mombert Andgelo Mombert

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Andgelo Mombert Andgelo Mombert

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31-01-2026 10:22

Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

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Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pour cette récolte de 2

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Nicolas Suberbielle Nicolas Suberbielle

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éric ROMERO éric ROMERO

Bonjour tous, Récolté dans les Vosges le 22/10/

31-01-2026 09:17

Marc Detollenaere Marc Detollenaere

Dear Forum,On decorticated wood of Castanea,I foun

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Orbilia sp. on Quercus
Chris Yeates, 25-08-2014 14:59
Chris YeatesBoinjour tous
This was found on the underside of a decorticated piece of small Quercus branch.
Most paraphyses were only slightly swollen at apex and were embedded in a terminal amorphous matrtix, as can be seen in the accompanying images.
Ascospores mostly parallel-sided, curved and with a relatively short spore-body; half the ascospores lying in a reversed position.
Guidance appreciated . . .
Cordialement
Chris
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Hans-Otto Baral, 25-08-2014 15:16
Hans-Otto Baral
Re : Orbilia sp. on Quercus
Hi Chris

not easy! Could you please make a sectio through the margin? The orientation of the cels is important and also the presence of glassy processes.

Any conidia observed?

In the worst case it is O. auricolor.
Chris Yeates, 25-08-2014 17:42
Chris Yeates
Re : Orbilia sp. on Quercus
Thanks Zotto
I'll have a go, but compared to many on ASCOFrance my section-cutting skills are a bit rubbish. Looking at your 'auricolor sl.' folder it looks close . . .
I have a number of finds from yesterday to work through but I shall come back to this one.
LG
Chris