Accès membres

Mot de passe perdu? S'inscrire

28-09-2014 17:48

Gernot Friebes

Hi, this species puzzles me a bit. It grows under

28-09-2014 16:10

Margaux Boeraeve

Hi,I found this ascomycete on soil. The top of the

24-09-2014 21:33

Vasileios Kaounas Vasileios Kaounas

Could you tell me which way to look ?Diam. 1 mm.

26-09-2014 23:50

M Jonathan M Jonathan

trouvé sur un sol boueux et rocheux, asque 300-35

26-09-2014 15:15

Alessio Pierotti Alessio Pierotti

can someone help me with this work ?Booth, C.; O'R

26-09-2014 13:48

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas fotos de una Pulvinula qu

26-09-2014 15:13

Alessio Pierotti Alessio Pierotti

can someone help me with this work ?Booth, C.; O'R

25-09-2014 08:22

Blasco Rafael Blasco Rafael

Hola, Tengo ESTAS Muestras Recogidas en Hayedo - a

24-09-2014 20:25

Enrique Rubio Enrique Rubio

Bonsoir les amis Peut etre j'avais recolté le me

24-09-2014 19:43

Bernard Declercq Bernard Declercq

Good evening,does anyone have following paper for

« < 1092 1093 1094 1095 1096 > »
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