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02-10-2014 20:00

Peter Thompson

Hello Everyone,I collected a sample of a stromatic

05-10-2014 22:25

Ueli Graf Ueli Graf

Suche: Mycotaxon, Volume 124, April-June 2013, pp.

06-10-2014 20:36

Chris Yeates Chris Yeates

Bonsoir tousI recently collected a partially-decor

02-10-2014 10:20

Marja Pennanen

Hi all,I found these accidently an a leaf with som

04-10-2014 21:35

Malcolm  Greaves Malcolm Greaves

This Cheilymenia found on horse dung seems a good

31-08-2013 13:22

Nina Filippova

Good time to everyone. Ascocoryne turficola appea

01-10-2014 09:02

Blasco Rafael Blasco Rafael

Hola, tengo estas muestras recogidas a 2200m, en p

02-10-2014 10:47

Marja Pennanen

Hi,these strange coloured are about 0,5-1 mm wide.

02-10-2014 11:14

Garrido-Benavent Isaac

Dear all,This is an unknown conidioma (may be an a

01-10-2014 21:20

Blasco Rafael Blasco Rafael

Hola, una Muestra this ver que PARECE, esta al Lad

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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