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15-07-2025 13:27

Angel Pintos Angel Pintos

Hello, does anyone have access to the following ar

14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

16-01-2023 21:31

Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Gernot Friebes

Hi,do you think this collection could be R. ulmari

25-02-2023 18:36

Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

12-07-2025 16:45

Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'avais d'abord pensé à des stro

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

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Hypoxylon macrocarpum on Corylus?
Marc Detollenaere, 24-10-2018 19:57
Marc Detollenaere

On Carpinus we found some multi-peritheciate stromata with a blue metallic shine.Stromata were mostly immersed.With KOH 5% a greyish pigment was extracted and we could also observe a slightly dehiscent perispore.Spores measured 10-11x4µ.


We thought it matched quite well with the description of Hypoxylon macrocarpum from Pouzar(1978).


Could you agree?

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Yannick Mourgues, 24-10-2018 21:55
Yannick Mourgues
Re : Hypoxylon macrocarpum on Corylus?
Hi.

Yes, I think you're right. See Jacques Fourier's description : http://pyrenomycetes.free.fr/hypoxylon/html/Hypoxylon_macrocarpum.htm

Yannick
Eduard Osieck, 25-10-2018 22:27
Re : Hypoxylon macrocarpum on Corylus?
Hi Marc,
The perithecia should be more or less cylindrical (see next issue of Coolia).
Eduard
Marc Detollenaere, 26-10-2018 00:01
Marc Detollenaere
Re : Hypoxylon macrocarpum on Corylus?

Hello Eduard,


If it not macrocarpum, what would you suggest?

Marc Detollenaere, 26-10-2018 20:31
Marc Detollenaere
Re : Hypoxylon macrocarpum on Corylus?
Merci Yannick
Thomas Læssøe, 29-10-2018 11:58
Re : Hypoxylon macrocarpum on Corylus?
I would suggest a species of Nemania. Perithecial contours are visible on the stromatal surface and the ostioles would appear to be papillate and the ascus plug is too long to fit Hypoxylon
cheers
Thomas
Marc Detollenaere, 30-10-2018 07:03
Marc Detollenaere
Re : Hypoxylon macrocarpum on Corylus?
Hello Thomas,

I think you are right. I have been misleaded by the apical apparatus.
That also explains the minimal reaction on KOH.
I discussed the matter with Bernard Declercq who thinks is Nemania serpens var. colliculosa.

Marc