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05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

04-07-2025 20:12

Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

03-07-2025 20:08

Francois Guay Francois Guay

I found this interesting yellowish asco growing on

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

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Xylariaceae (?) from Portugal
Lothar Krieglsteiner, 05-02-2023 00:33
Lothar Krieglsteiner.. Algarve, Foia near Monchique, on wood of (?) Castanea. I first thought of a Biscogniauxia, but was a bit flubbergasted by the spores. They are hyaline at first, but partly become black in one of the two cells, they have a germ slit and the ascus porus reacts brightly blue in Melzer. The spores I measured about !3-18 (20)/7-8 µm. They are hyaline first (fotos in Melzers reagent), but some get dark at the larger cell alter. But most spores are obviously dispersed in hyaline state as can be seen by the light tendrils leaving the perithecia.
I am not sure if I saw a similar fungus on ascofrance not too long ago, but I cannot manage to find it again.
Who can help?
Yours, Lothar
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Björn Wergen, 05-02-2023 00:39
Björn Wergen
Re : Xylariaceae (?) from Portugal
Dear Lothar,
This is Biscogniauxia anceps.
Regards
Björn
Lothar Krieglsteiner, 05-02-2023 00:44
Lothar Krieglsteiner
Re : Xylariaceae (?) from Portugal
Hello Björn,
thank you very much! I did not know that there is a Biscogniauxia species with such spores. Great!
Yours, Lothar