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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.

13-09-2025 15:43

Edmond POINTE Edmond POINTE

Bonjour Christian,J'ai trouvé deux spores ressemb

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

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

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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