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21-11-2015 07:19

Leandro Sánchez Leandro Sánchez

Photos et micro travail de mon ami Antonio PAlazó

24-11-2015 14:56

Castillo Joseba Castillo Joseba

En madera no identificadaNo se por donde seguir...

23-11-2015 11:18

Blasco Rafael Blasco Rafael

Hola, tengo esta muestra que a crecido en una caja

23-11-2015 12:21

Stefan Blaser

Hello everybody,I would appreciate some help with

22-11-2015 15:25

Tanja Böhning Tanja Böhning

Bonjour, La semaine derière j´ai collecté un A

22-11-2015 20:59

Tanja Böhning Tanja Böhning

Bonsoir,   Hièr j´ai collecté des Scutellin

23-11-2015 11:55

Francisco  SÃNCHEZ Francisco SÁNCHEZ

Dans l'humus chêne. 22/11/2015 Microscopie sembl

22-11-2015 21:39

Danièle Carbonnel

Le specimen récolté sur du chêne m'a fait pense

22-11-2015 15:49

Björn Wergen Björn Wergen

Hi there,does anyone have these papers?Hino,I. (19

21-11-2015 21:52

Bernard CLESSE Bernard CLESSE

Bonsoir à tous,Un ami m'envoie ces photos d'un py

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Xylariales
Gernot Friebes, 28-09-2014 17:48
Hi,

this species puzzles me a bit. It grows under the bark of twigs (Castanea sativa according to the person who collected it) and doesn't develop much of a stromatic tissue between the perithecia but it does form small and rather well-defined pustules. Asci are long cylindrical, very thin-walled and fragile and I'm not sure about the number of ascospores but I have actually never counted more than 4 per ascus. They are also IKI-. Ascospores measure 15-21 x 10-13 µm and they are smooth, without sheaths or appendages but with a mostly straight germ slit over the whole length. Paraphyses are numerous, hyaline, filiform. Maybe you have an idea!

Best wishes,
Gernot
  • message #31471
Jacques Fournier, 28-09-2014 18:18
Jacques Fournier
Re : Xylariales
Hi Gernot,
the microscopic characters of your fungus would fit Coniochaeta fairly well but the ascomata sunken in bark do not recall this genus. Did you try to search for small black setae around the ostiole?
Hope someone will come up with better suggestions.
Cheers,
Jacques
Gernot Friebes, 28-09-2014 19:33
Re : Xylariales
Hi Jacques,

interesting, Coniochaeta didn't even cross my mind due to the macroscopic appearance. I haven't seen any setae but I'll have to check that again more carefully. Thanks!


Best wishes,
Gernot