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12-03-2018 16:13

Plicaria endocarpoides ;
Vasileios Kaounas Vasileios Kaounas

Found in burned forest with Pinus halepensisDimens

10-03-2018 10:52

Tricharina gilva ?
Vasileios Kaounas Vasileios Kaounas

Found 09-03-18, in a burned forest of Pinus halepe

16-03-2018 11:22

Camarosporium
Till Lohmeyer

Bonjour - je crois d'avoir trouvé - peut-être -

16-03-2018 16:10

Lophiotrema rubi ?
Christopher Engelhardt Christopher Engelhardt

On Rubus, partly immersed in old twig. Ascospores

16-03-2018 01:07

Literature search
Viktorie Halasu Viktorie Halasu

Hello forum,would anyone have this article please?

15-03-2018 19:10

Demande littérature
Claude Kaufholtz-Couture Claude Kaufholtz-Couture

Bonjour, Je recherche la publication suivante :

13-03-2018 12:13

Demande littérature
Guy Garcia

Bonjour, je recherche la publication de BENEDIX

13-03-2018 09:47

Un asco...
Jean-Louis JALLA Jean-Louis JALLA

BonjourHier « au sol », un champignon qui me pos

14-03-2018 19:06

Monacrosporium subtile on unknown hyphomycete?
Jan-Arne Mentken

Hello everyone,in recent days I found this anamorp

14-03-2018 19:17

Discomicete en Quercus 10-03-18
Blasco Rafael Blasco Rafael

Hola necesito de su ayuda para llegar a conocer es

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Pyrenomycet on Corylus avellana.
Per Marstad, 18-12-2017 10:41
Per MarstadHello.
I would like a name on this.
Spores 15x6 my.
Asci 150x7
Greetings, Per
  • message #51652
  • message #51652
  • message #51652
Gernot Friebes, 18-12-2017 10:53
Re : Pyrenomycet on Corylus avellana.
Hi, Per,

it looks like a Hypoxylon, e.g. H. fuscum, which is very common on Corylus. If you can, please put a piece of the stroma in a drop of KOH and observe the KOH-extractable pigments. For further infos also see here: http://pyrenomycetes.free.fr/hypoxylon/html/Hypoxylon_fuscum.htm


Best wishes,
Gernot

Jacques Fournier, 18-12-2017 15:31
Jacques Fournier
Re : Pyrenomycet on Corylus avellana.
I agree with Gernot, it might be H. fuscum but the spores you show have a conical cellular appendage at base, which is unknown in Hypoxylon.Make sure they come from the stromata you show on pics 1-2.
Ascospores of H. fuscum are also distinctive in having a sigmoid, not straight germ slit, please take photos at higher magnification to illustrate this.
Jacques
Per Marstad, 18-12-2017 16:11
Per Marstad
Re : Pyrenomycet on Corylus avellana.
The spores came from my pictures 1 and2.
I know H. fuscum well, but this has another shape.
Thank you both for help.
Per.