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20-03-2026 12:53

Eutypa spec. (?)
Stefan Blaser

Hello everybody, In the field, from distance, my

20-10-2017 09:23

Hymenoscyphus ¿calycinoides?
Garcia Susana

Este otro crecía en el mismo trocito de madera qu

20-03-2026 16:16

Pseudomassaria-like on Cornus alba
Edvin Johannesen Edvin Johannesen

These 0.5 mm diam. acervuli were breaking through

19-03-2026 19:34

Xylariaceae? on Carpinus betulus wood
Filip Fuljer Filip Fuljer

Hello everyone,a few days ago I collected this str

19-03-2026 18:25

Myriosclerotinia curreyana?
William Slosse William Slosse

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

17-03-2026 10:09

Lasiobelonium corticale ?
François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

19-03-2026 15:58

"Lasiosphaerioid"
Stefan Blaser

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

19-03-2026 17:50

Massarina on Corylus
Enrique Rubio Enrique Rubio

Hi to everybodyThese thiny, blackish pseudothecia

18-03-2026 13:09

Orbilia on Celtis occidentalis
Khomenko Igor Khomenko Igor

I recently examined Celtis occidentalis branches

17-03-2026 19:41

Pyréno sur branche morte de chêne
Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,Pourriez-vous m'aider à

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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