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08-03-2025 14:54

Orbilia or Hyalorbilia?
Ethan Crenson

Hello all, This is a recent find from New York Ci

08-03-2025 16:21

Dialonectria episphaeria sur Diatrype stigma
Yanick BOULANGER

BonjourDialonectria episphaeria sur Diatrype stigm

08-03-2025 08:47

Possible first record of G. schizosporum in 74 years, and first ever in US Southwest.
Danny Newman Danny Newman

Hello AscoFrance, I believe I may have found the

06-03-2025 21:53

Phaeosphaeria equiseti or Phaeosphaeria berlesei ?
Charles Grapinet Charles Grapinet

Hello, I found a very abundant Phaeosphaeria on t

04-03-2025 21:27

Asco jaune
Yanick BOULANGER

BonsoirPetites fructifications jaunes récoltées

06-03-2025 17:23

Paratricharina poiraultii ?
Vasileios Kaounas Vasileios Kaounas

Found 13/2/25 on moss, very far away, only almond

06-03-2025 23:27

Cosmospora or Dialonectria on Asterosporium asterospermum
Edvin Johannesen Edvin Johannesen

Hello!I have a collection with acervuli of Asteros

04-03-2025 15:38

Arundinaria sps. with 3-curved germ slit verrocose spores
Hardware Tony Hardware Tony

Found on I what I think is Phyllostachys aurea, mo

06-03-2025 11:45

Hypoxylon ticinense sl?
Wim de Groot

Several smal patches of Hypoxylon ticinense (sl?)

30-06-2018 14:36

Another Lachnum for identification
Jan Knuiman

Growing on a rotten twig of a broadleaf tree (Sali

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?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?

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Hans-Otto Baral, 03-03-2025 09:26
Hans-Otto Baral
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.
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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
Hans-Otto Baral
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.