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03-12-2021 16:37

maurice pelissier maurice pelissier

Bonjour trouvé dans les Hautes Pyrénées sur un

03-12-2021 15:29

Chris Yeates Chris Yeates

Bonjour tous An Ascobolus sp. has appeared in som

23-09-2021 13:40

Björn Nordén

Hi all,Does anyone by any chance have The taxonom

02-12-2021 18:30

Khomenko Igor Khomenko Igor

Hi, this fall around Ottawa, ON, Canada I found a

02-12-2021 08:10

Viktorie Halasu Viktorie Halasu

Hello,I have here a large Mollisia (approx. 3 mm,

02-12-2021 12:45

Stephen Mifsud Stephen Mifsud

I was revising some past identifications and I wis

29-11-2021 17:39

François Bartholomeeusen

Good evening to all,After several microscopic exam

02-12-2021 10:29

Joop van der Lee Joop van der Lee

I am looking for the following documentation:Chala

01-12-2021 20:03

Bometon Javier Bometon Javier

Apotecios de hasta 12mm, copulados de joven, sesil

29-10-2021 20:54

Chris Yeates Chris Yeates

Bonsoir tous As part of my study of the fungi occ

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INCONNU
Alain Delannoy, 16-10-2021 19:50
Bonjour;

Sur écorce morte de Fagus.

Taille 2 - 2,5 mm

IKI -

Spores 28 - 31 x 5-6 µ

Aucune idée du genre...

Merci de votre aide,

Alain D.
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Mirek Gryc, 16-10-2021 20:11
Re : INCONNU
Hi Alain
Compare with Phaeohelotium geogenum.
More specifically, check the IKI reaction should be positive.
In the event of uncertainty, use KOH first.
You should also check the presence of croziers.
regards
Mirek
Hans-Otto Baral, 16-10-2021 20:37
Hans-Otto Baral
Re : INCONNU
Hi Alain and Mirek

Yes, most often on Quercus remnants but rarely on other trees. IKI should stain a small ring, perhaps visible under oil immersion?

Very typical is that the spores contain large low-refractive vacuoles with a few minute LBs around, well visible on your photos.

Zotto
Alain Delannoy, 16-10-2021 20:43
Re : INCONNU
Merci à vous,

J'ai testé KOH avant IKI, pas de réaction, je vais recommencé l'essai.

OK pour crozier, je vais vérifier, j'ai encore du matériel bien frais.

Merci à vous deux,

Alian