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Mot de passe perdu? S'inscrire

16-09-2025 12:53

Philippe PELLICIER

Pézizes de 1-4 mm, brun grisâtres, sur les capsu

03-09-2025 12:44

Enrique Rubio Enrique Rubio

Hi to somebody.I would like to know your opinion o

15-09-2025 14:40

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for a digital copy of the seco

14-09-2025 22:16

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

13-09-2025 14:10

Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

10-09-2025 23:53

Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

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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.