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19-06-2018 21:45

Scutellinia sur alluvions sableuses d'un ruisseau acide
BERNARD CLESSE BERNARD CLESSE

Bonsoir à toutes et tous, Je n'arrive pas à voi

18-06-2018 04:55

Heterosphaeria
Andgelo Mombert

Bonsoir,Sur tige morte de Gentiana lutea, en compa

19-06-2018 09:47

Bryocentria brongniartii (Bryophyte Parasite)
Greiff Georges

Hi all, I encountered this yesterday and think it

19-06-2018 09:34

Hymenoscyphus?
Greiff Georges

Found on rotting twigs in wet woodland. Fruits wh

18-06-2018 19:50

Naevioideae
Elisabeth Stöckli

Bonsoir, Trouvé sur feuille de Rubus (à 965m, R

18-06-2018 13:54

Peziza???
Castillo Joseba Castillo Joseba

Esta posible Peziza en bosque de  piceas,  sobre

18-06-2018 13:56

Peziza
Castillo Joseba Castillo Joseba

en bosque de abetos,  sobre tierra   ...  A v

11-06-2018 20:34

Hyaloscyphaceae (?) sur tige morte
Andgelo Mombert

Bonsoir,Sur tige morte de plante, probablement d'A

18-05-2018 18:38

Re : Phaeosphaeria => Pleosporaceae => Pleospora abscondita
Riet van Oosten Riet van Oosten

Hello,Found 17-05-2018, The Netherlands.On: Phragm

17-06-2018 00:36

Caloscypha fulgens in western USA undescribed?
Alan Rockefeller Alan Rockefeller

Looks like what is passing for Caloscypha fulgens

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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