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13-02-2026 18:05

Margot en Geert Vullings

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

02-02-2026 21:46

Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

13-02-2026 03:30

Tomaz Vucko Tomaz Vucko

Hello! I found these immersed perithecia on a stic

15-02-2026 04:32

Tomaz Vucko Tomaz Vucko

One more specimen that is giving me some descent a

14-02-2026 22:45

Tomaz Vucko Tomaz Vucko

Hy!I would ask for some help determing this specie

09-02-2026 14:46

Anna Klos

Goedemiddag, Op donderdag 5 februari vonden we ti

14-02-2026 19:09

Valencia Lopez Francisco Javier

Hola colegasEstoi interesado en este articulo, Agn

14-02-2026 10:58

Bernard CLESSE Bernard CLESSE

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

13-02-2026 18:02

Nogueira Héctor

November 2025 León (SPAIN) ID Help Hello! Thi

12-02-2026 21:34

patrice Callard

Bonjour, la face inférieure des feuilles ce certa

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Hypoxylon marron
Castillo Joseba, 04-08-2015 09:44
Castillo JosebaEncontrado en el Pirineo, en madera de abeto o de haya

A ver que os parece


Joseba
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  • message #37262
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Alain GARDIENNET, 04-08-2015 11:19
Alain GARDIENNET
Re : Hypoxylon marron

See towards Hypoxylon perforatum, or rubiginosum using the key : http://pyrenomycetes.free.fr/hypoxylon/keydir/dichotomickey.htm


You will have to observe subsurface granules, and KOH reaction.


Have fun with it !


Alain

Eduard Osieck, 04-08-2015 11:25
Re : Hypoxylon marron
Macroscopically this could be H. rubiginosum. Did you already check the KOH-reaction?
Castillo Joseba, 04-08-2015 16:02
Castillo Joseba
Re : Hypoxylon marron
Se trata de Hypoxylon perforatum, muy parecida a H. rubiginosum, pero con una reacción del estroma al KOH 10% amarillo verdoso en vez de rojizo