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03-07-2025 20:08

Francois Guay Francois Guay

I found this interesting yellowish asco growing on

03-07-2025 20:07

Francois Guay Francois Guay

I found this interesting yellowish asco growing on

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

02-07-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello, bonjour.Here is the paper I'm searching for

30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 06:57

Ethan Crenson

Hi all, Another find by a friend yesterday in Bro

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Rustroemia firma?
VASILEIOS KAOUNAS, 09-12-2008 07:15
it was found in putrid branch from Quercus ilex.
Ascospores 19,3-23,0*4,4-4,9 ìm, Q=4,4-5,0
  • message #5972
VASILEIOS KAOUNAS, 09-12-2008 07:16
Re:Rustroemia firma?
spores foto
  • message #5973
Hans-Otto Baral, 09-12-2008 13:44
Hans-Otto Baral
Re:Rustroemia firma?
Dear Vasileios

that is a good question. R. firma has wider spores (*15-20 x 5-6.5 µm). Yours look too narrow (though alive), so I don't think it is R. firma. Could you search for overmature spores, do they get 3 septa? Probably they procude small conidia like typical R. firma. You could also look for the excipulum, is it of thin-walled prismatic cells or gelatinised?

Asci are probably strongly blue in IKI and with croziers, but this should also be checked.

Zotto