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25-04-2026 11:34

lachnum pudicellum
Louis DENY

Bonjour forumdans la clé de Zotto, L. pudicellum

22-04-2026 20:54

Pyrenopeziza on monocot.
Enrique Rubio Enrique Rubio

Hi to everybody.This Pyrenopeziza grew in moist le

24-04-2026 03:16

Trinacrium robustum?
David Chapados David Chapados

Found while looking at something else from wood in

22-04-2026 01:06

Neonectria ou thelonectria ?
Richard VALERI Richard VALERI

Bonjour à tous.Je vous présente cette Nectria s.

22-04-2026 20:17

Pseudaegerita spec.
Marian Jagers Marian Jagers

Is anyone familiar with the Hyphomycetes genus Pse

23-04-2026 06:46

Fungus sp
François Freléchoux François Freléchoux

Bonjour, Voici la description d'un minuscule asco

21-04-2026 22:14

Peziza
Margot en Geert Vullings

This cup fungus was found on April 10, 2026, on lo

22-04-2026 19:12

Poilu, violet avec KOH
Louis DENY

Bonjour forum.Trouvé à Belfort, est de la France

21-04-2026 21:00

Hymenoscyphus sp
Sylvie Le Goff

Bonjour à tousJe sollicite votre aide pour cet as

21-04-2026 13:36

Wentiomyces-like on Salix
Gernot Friebes

Hi,I am out of ideas for this one. I collected Sal

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Very small yellow ascomycota
Edit Szilvásy, 19-11-2012 23:43
Edit SzilvásyHi all!
I bring these specimens asking for your help.

Specimens found  on wood of ash.


Spores 10-11X3,5-4 µ


A greeting and thank you very much!


Edit


?

  • message #20463
  • message #20463
Hans-Otto Baral, 20-11-2012 09:03
Hans-Otto Baral
Re : Very small yellow ascomycota
This is not easy. Would require a median section to see the ectal excipulum (gelatinized or not), and the iodine reaction of the ascus apex (IKI). Could be a Hymenoscyphus or Bisporella.

What is very small? 1 mm?

Zotto
Edit Szilvásy, 20-11-2012 11:08
Edit Szilvásy
Re : Very small yellow ascomycota
Dear Zotto,
Thank you for your attention.

Iodine reaction:  in Hungary an amateur mycologist not allowed buy Melzer reagent.


I could not make median sections, because the Ascomycota was very small cross-section 0.1 to 0.5 mm.


It seems glass like and gelatinized.


Thanks for the suggestion of looking Bisporella or Hymenoscyphus genus.


For me this is an achievement as well.
Greetings: Edit

Hans-Otto Baral, 20-11-2012 12:13
Hans-Otto Baral
Re : Very small yellow ascomycota
Thje forbid to by Melzer is surely because of the included chloral hydrate. But this substance is unfortunate also for the fungi: see my online article

http://www.gbif-mycology.de/HostedSites/Baral/IodineReaction.htm?

Maybe you can obtain iodine crystals and Kalium (potassium) iodide?

If gelatinous it should be Bisporella citrina.

Zotto
Edit Szilvásy, 20-11-2012 16:41
Edit Szilvásy
Re : Very small yellow ascomycota
Dear Zotto,

I have read the recommended article. It's very interesting and useful. I hope I'm smarter, but the chemistry is a little hard for me. :-)
Greetings: Edit
Hans-Otto Baral, 20-11-2012 17:04
Hans-Otto Baral
Re : Very small yellow ascomycota
The first trials are always the hardest, but when you have an ascomycete with a large amyloid ring you will get excited :-)

Zotto
Edit Szilvásy, 20-11-2012 22:24
Edit Szilvásy
Re : Very small yellow ascomycota
:-) I believe you..
Edit