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05-03-2026 10:07

Hulda Caroline Holte

Hello, I found and collected this species growing

14-03-2026 13:51

Thierry Blondelle Thierry Blondelle

Hi everybody Under Quercus ilex, i hesitate to na

12-03-2026 19:44

Enrique Rubio Enrique Rubio

Hi to everybody.Can you give me any suggestions ab

11-03-2026 17:36

Michel Hairaud Michel Hairaud

Bonjour, Je cherche des indices  pour cette réc

12-03-2026 15:45

Åge Oterhals

Dear forum,I found this small discomycete on a ver

08-03-2026 14:05

Thierry Blondelle Thierry Blondelle

Bonjour à tous,Sur 3 récoltes supposées de H. l

12-03-2026 16:17

Sylvie Le Goff

Bonjour à tousRécolté dans le 22 en France (ré

12-03-2026 14:37

David Wasilewski

These small ascomycota (1-3 mm) ere observed growi

11-03-2026 16:48

Bruno Coué Bruno Coué

Bonjour, je serais heureux d'avoir votre avis sur

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

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Polysporous ascomycete
Gernot Friebes, 04-04-2016 15:13
Hi,

this puzzling species was handed to me. It grows on decorticated, dry, sun-exposed wood of a fallen oak tree. The ascomata are very variable, sometimes +- globose and solitary, other times clumped together or somewhat immersed in the wood. The asci are filled with numerous tiny, hyaline, ellipsoid ascospores which measure just about 2 x 1 µm. The asci appear to be bitunicate, they are widest close to the base and have a short but distinct stipe. Interestingly, they show a bluish reaction to KOH+IKI. We are thankful for any ideas!

Best wishes,
Gernot 

(Photos are not mine)
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Alain GARDIENNET, 04-04-2016 18:02
Alain GARDIENNET
Re : Polysporous ascomycete
Ascospores or microconidias ?
Gernot Friebes, 04-04-2016 18:08
Re : Polysporous ascomycete
Hi Alain,

the person who collected this fungus has only observed these tiny spores but I'm not sure... I haven't studied the material thoroughly myself yet. Do you have any idea if we assume these are in fact conidia?

Best wishes,
Gernot
Alain GARDIENNET, 04-04-2016 18:27
Alain GARDIENNET
Re : Polysporous ascomycete

Not idea for the moment, but one can have fungi for which it's possible (in Nectriaceae family for example).


Your fungus macroscopically looks like Bertia.


Alain

Gernot Friebes, 05-07-2016 15:11
Re : Polysporous ascomycete
Hi,

this is just a quick update for anyone interested in this fungus. I was able to identify it as Moristroma quercinum, or at least it seems to be this species based on gross morphology and ecology. See here for more information: https://www.researchgate.net/publication/226350012_New_species_of_Moristroma_Ascomycetes_and_phylogenetic_position_of_the_genus

Best wishes,
Gernot
Alain GARDIENNET, 06-07-2016 11:21
Alain GARDIENNET
Re : Polysporous ascomycete

Thanks for the information Gernot,


Alain

Jacques Fournier, 06-07-2016 16:07
Jacques Fournier
Re : Polysporous ascomycete
thanks Gernot for this information.
I think I already came across a very similar fungus in the past but I had no clue about its systematic position. Bjorn's paper is excellent and leaves no doubt about the identification.
Great!

Jacques