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21-01-2026 19:55

Nemania aureolutea?
Bohan Jia

Hi,  Could this be Nemania aureolutea? Or did I

21-01-2026 16:32

Lichenicolous coelomycete
Gernot Friebes

Hi,I need your help with some black dots on a lich

21-01-2026 16:48

Hyphomycete on Rubus fruticosus agg.
Gernot Friebes

Hi,after my last unknown hyphomycete on this subst

20-01-2026 17:49

Mollisina acerina ?? Turbinate and hemiamyloid
Hardware Tony Hardware Tony

I offer this collection as a possibility only as e

15-01-2026 15:55

pyrenomycete on Quercus
Lothar Krieglsteiner Lothar Krieglsteiner

this one is especially interesting for me because

03-01-2026 15:36

Nomenclature
éric ROMERO éric ROMERO

Bonjour, Pouvez-vous me dire quel est le nom à p

19-01-2026 12:01

Ayuda con esta 1121
Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia (España) 

17-01-2026 19:35

Cosmospora aurantiicola: Gibt es dazu Literatur ?
Arnold Büschlen

Hallo, ich suche zu Cosmospora aurantiicola Lite

16-01-2026 00:45

Hyphodiscus (?) on hardwood, hemiamyloid, staining reddish-orange
Ethan Crenson

Hi all, On decorticated hardwood from a New York

18-01-2026 12:24

Anamorph on an olive tree
Josep Torres Josep Torres

Hello.An anamorph located on the surface of a thin

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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