16-02-2026 11:53
Joeri Belisbetween leaf litter on twig in young salix growth.
14-02-2026 22:45
Tomaz Vucko
Hy!I would ask for some help determing this specie
13-02-2026 03:30
Tomaz Vucko
Hello! I found these immersed perithecia on a stic
14-02-2026 10:58
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous m'aider à
13-02-2026 18:05
Margot en Geert VullingsOn February 9, 2026, we found these small hairy di
02-02-2026 21:46
Margot en Geert VullingsOn a barkless poplar branch, we found hairy discs
15-02-2026 04:32
Tomaz Vucko
One more specimen that is giving me some descent a
09-02-2026 14:46
Anna KlosGoedemiddag, Op donderdag 5 februari vonden we ti
?Ostropalean fungus on wood
Juuso Äikäs,
03-03-2025 08:10
I recently found these quite small fruitbodies growing on a fallen, decorticated trunk of a deciduous tree.
Asci 8-spored, IKI-, no croziers. Hymenium turning a purplish color in IKI. Paraphyses filiform, branched.
Spores 4-celled, measuring 16.3 - 18.8 × 3.7 - 4.0 µm, Q = 4.4 - 4.7; avg = 17.3 - 3.8 µm, Qav = 4.5; n = 3.
I presume this belongs to Ostropales, and is probably lichenized -- the green stuff is the thallus?
Hans-Otto Baral,
03-03-2025 09:26
Re : ?Ostropalean fungus on wood
Great docu! Could you try a section? The excipulum is important, especially near the margin. How small are the apos? The absence of croziers is not clearly seen.
Juuso Äikäs,
04-03-2025 09:25
Re : ?Ostropalean fungus on wood
Thanks. The apos are 0.2 - 0.5 mm wide. I tried to do a section a few times, but didn't really succeed. But here are a couple pics of the attempt.
Adam Polhorský,
05-03-2025 09:45
Re : ?Ostropalean fungus on wood
I think It should be Durella atrocyanea. A.
Hans-Otto Baral,
05-03-2025 10:01
Re : ?Ostropalean fungus on wood
Yes indeed! I saw D. atrocyanea often with numerous small LBs grouped in each cell, but know also cases of spores with a low oil content.
Juuso Äikäs,
05-03-2025 17:55
Re : ?Ostropalean fungus on wood
Thanks to Adam as well -- nice to have a name for this! I examined the sample again, and indeed there appear to be croziers after all. So Helotiales, rather than Ostropales.