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10-10-2013 18:05

SYLVAIN ARD

Bonjour, Quelques-uns m'avaient demandés comment

09-10-2013 20:16

Malcolm  Greaves Malcolm Greaves

This White "Scutellinia" was in the same damp rut

09-10-2013 20:07

Malcolm  Greaves Malcolm Greaves

I went back to an area where I thought I had found

07-10-2013 20:56

Marcus Yeo

I recently found this discomycete on dead stems of

08-10-2013 19:01

Christian Lechat Christian Lechat

Hi to all,does anybody have this paper: Stephano

05-10-2013 13:25

Ralph Vandiest Ralph Vandiest

Hello,I found these small Peziza in a wetland on a

07-10-2013 00:38

Stip Helleman Stip Helleman

Hallo to all,last friday I collected a piece of a

06-10-2013 23:09

Ralph Vandiest Ralph Vandiest

Hello,I found these small bright yellow cups &

06-10-2013 00:25

Malcolm  Greaves Malcolm Greaves

Could someone help with this small cup found on a

06-10-2013 15:35

Alex Akulov Alex Akulov

Dear friends,Today my wife find a Discomycete samp

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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