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13-02-2026 18:05

Tiny disc on Acer
Margot en Geert Vullings

On February 9, 2026, we found these small hairy di

02-02-2026 21:46

Dark disc on Populus
Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

13-02-2026 03:30

Unknown near Pseudohalonectria
Tomaz Vucko Tomaz Vucko

Hello! I found these immersed perithecia on a stic

15-02-2026 04:32

Lentomitella like, aseptate?
Tomaz Vucko Tomaz Vucko

One more specimen that is giving me some descent a

14-02-2026 22:45

Vexillomyces/Claussenomyces
Tomaz Vucko Tomaz Vucko

Hy!I would ask for some help determing this specie

09-02-2026 14:46

Cistella granulosella of Hyphodiscus incrustatus?
Anna Klos

Goedemiddag, Op donderdag 5 februari vonden we ti

14-02-2026 19:09

Petición de articulo Smardaea verrucispora
Valencia Lopez Francisco Javier

Hola colegasEstoi interesado en este articulo, Agn

14-02-2026 10:58

Asco blanc sur Diatrype
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

13-02-2026 18:02

Help ID
Nogueira Héctor

November 2025 León (SPAIN) ID Help Hello! Thi

12-02-2026 21:34

Attaque des feuilles de Quercus suber
patrice Callard

Bonjour, la face inférieure des feuilles ce certa

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Hypoxylon ?
Castillo Joseba, 04-08-2015 09:52
Castillo Josebaen rama de  haya (Fagus)

No se si he conseguido ver un asca ??    NO he visto reacción al IKI

Saludos
Joseba
  • message #37263
  • message #37263
  • message #37263
  • message #37263
Lothar Krieglsteiner, 04-08-2015 10:54
Lothar Krieglsteiner
Re : Hypoxylon ?

without comparing the spore size: this looks very much like H. fragiforme to me.


Regards from Lothar

Alain GARDIENNET, 04-08-2015 11:11
Alain GARDIENNET
Re : Hypoxylon ?

Old Hypoxylon fragiforme, with Cosmospora sp. growing on it.


Alain

Eduard Osieck, 04-08-2015 11:19
Re : Hypoxylon ?
Hypoxylon fragiforme should have an amyloid apical ring (J+). According to the synoptic key of http://pyrenomycetes.free.fr/hypoxylon/index.htm there do not exist hemisphaerical species without such an apical ring (at least in Europe). Did you check the KOH reaction (H. fragiforme = orange).

Eduard