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25-02-2023 18:36

Nectria
Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

12-07-2025 16:45

Sur écorce de Hêtre
Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'avais d'abord pensé à des stro

05-07-2025 12:38

Pyrenomycetous fungi on dead Juniperus twig
Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

01-06-2025 09:37

Octospora
Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

06-07-2025 19:36

Auda con esta
Castillo Joseba Castillo Joseba

me mandan el material de Galicia (España) recolec

07-07-2025 19:22

Ascomycota
David Chapados David Chapados

Hi,Does anyone know what could this anamorph be?ht

02-07-2025 18:45

Sur Osmunda regalis
Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

04-07-2025 20:12

Black thready anamorph
Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Ascomycete on a herbaceous stem.
Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Salvia leaf parasite
Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

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Synnemata on Russula
Alain GARDIENNET, 04-10-2017 20:05
Alain GARDIENNET

Hi forum,


I can't identify this hyphomycete on old black Russula.


White synnemata less than 1mm, with subglobose conidial mass,  producing ciliate hyalin aseptate conidia, 6-7 x 2 µm, with 4-11 µm long appendages .


Alain

  • message #50618
  • message #50618
Jason Karakehian, 04-10-2017 20:43
Jason Karakehian
Re : Synnemata on Russula
Those are some really good photos. I wonder though if they aren't pycnidia? It looks like the masses of conidia are emerging from a peridium of hyaline tissue?
Jacques Fournier, 05-10-2017 10:07
Jacques Fournier
Re : Synnemata on Russula
salut Alain,
je pense que Jason a raison. Un synnema est porté par un stipe, souvent long, constitué d'hyphes en palissade qui se différencient en cellules conidiogènes au sommet.
Il faudrait voir aussi à quoi ressemblent les cellules conidiogènes, qui se trouvent peut-être à la base de la pycnide.
Une coupe longitudinale de la pycnide s'impose! ça t'apprendra à lorgner les Russules!
Amuse toi bien,
Jacques
Jason Karakehian, 05-10-2017 14:39
Jason Karakehian
Re : Synnemata on Russula
Yes. Determining what type of conidiomata you have will direct you to literature specific to that type. For instance, when we have pycnidia or acervuli we can turn to Sutton's The Coelomycetes. Fungi imperfecti with pycnidia, acervuli and stromata. 1980. Best - J
Alain GARDIENNET, 06-10-2017 07:32
Alain GARDIENNET
Re : Synnemata on Russula

Bonjour,


I only find time to answer.


I will do again new microscopy, probably on sunday. I can show you now another picture corresponding probably to the top of synnemata-like.


Alain


 

  • message #50643
Spooren Marco, 08-10-2017 11:35
Spooren Marco
Re : Synnemata on Russula
Hello Alain,

I do not have a speciesname for you,but the synnemateous fungi, the genera, are nice3ly discribed in "Genera of hyphomycetes ", from Seifert and Gams  and so.

Best,

Marco
Hermann Voglmayr, 09-10-2017 18:07
Hermann Voglmayr
Re : Synnemata on Russula
Hi Alain,
look at Eleutheromyces subulatus. Grows, amongst others, on Russula and blackens the basidiomata.
Cheers,
Hermann
Alain GARDIENNET, 10-10-2017 21:52
Alain GARDIENNET
Re : Synnemata on Russula

and the winner is... Hermann ! Congratulations.


Here are cells of conidiomata wall.


Thank you to all, especially to Hermann, of course.


Alain

  • message #50689