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21-03-2026 22:59

Petr Soucek

Good evening, I would appreciate some advice on th

21-03-2026 15:13

Lepista Zacarias

Hello everyone, Does any one know of any literatu

20-03-2026 12:53

Stefan Blaser

Hello everybody, In the field, from distance, my

20-10-2017 09:23

Garcia Susana

Este otro crecía en el mismo trocito de madera qu

20-03-2026 16:16

Edvin Johannesen Edvin Johannesen

These 0.5 mm diam. acervuli were breaking through

19-03-2026 19:34

Filip Fuljer Filip Fuljer

Hello everyone,a few days ago I collected this str

19-03-2026 18:25

William Slosse William Slosse

Good evening everyone, On 18/03/26 I found a few

17-03-2026 10:09

François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

19-03-2026 15:58

Stefan Blaser

Hello everybody, I hope for some hints... Macro:

19-03-2026 17:50

Enrique Rubio Enrique Rubio

Hi to everybodyThese thiny, blackish pseudothecia

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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