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29-04-2025 09:13

Louis DENY

Bonjour forumVosges du sud, ballon d'Alsace altitu

01-05-2025 20:11

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, today I have collected a tiny ascomycete g

04-05-2025 11:37

Andreas Gminder Andreas Gminder

Hello,yesterday I took an attached branch of Querc

02-05-2025 08:41

Tony Moverley

A Monilinia type fungus has recently been collecte

02-05-2025 08:45

Isabelle Charissou

Bonjour, existe-t-il un pdf d'un Glossarium polygl

03-05-2025 12:43

Matthias Reul Matthias Reul

Hi together, Maybe someone has an idea about this

02-05-2025 13:29

Isabelle Charissou

Bonjour, j'aimerais savoir s'il y a eu des public

03-05-2025 18:35

Edmond POINTE Edmond POINTE

J'ai  connu Michel DELPONT au début de ma passio

08-07-2023 19:24

Juuso Äikäs

These Mollisia fruitbodies were growing on a twig

01-05-2025 11:25

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

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Pyrenomycete on Alnus glutinosa
Tomaz Vucko, 07-01-2025 05:40
Tomaz VuckoGreetings everyone!

Would perhaps someone here recognise this species I found in the recent days on Alnus glutinosa?
IKI-, CR+
Spores measure roughly: 
(32.5) 33.1 - 39.9 (45.7) × (16.5) 17.4 - 19.3 (21.9) µm
Q = (1.7) 1.9 - 2.1 (2.2) ; N = 16
Me = 36.3 × 18.4 µm ; Qe = 2
Interestingly ascus seem to be very delicate and it leaks spores, also sideways, almost as soon they are thrown into a water mount and are hard to catch as whole. There was also mild frost in the last days if that might have affected something. 
Location is Slovenia.

Best regards and a happy New Year!
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Gernot Friebes, 07-01-2025 07:27
Re : Pyrenomycete on Alnus glutinosa
Hi, Tomaz!

It reminds me of Dothivalsaria megalospora.

Best wishes,
Gernot
Jacques Fournier, 07-01-2025 09:31
Jacques Fournier
Re : Pyrenomycete on Alnus glutinosa
Hi Tomaz and Gernot, both early birds!
I agree with Gernot and I congratulte Tomaz for the quality of his illustrations, both macro- and micro-, allowing to name this fungus confidently.
The phylogenetic affinities of this taxon are questionable and still unkown. I hope someone will be interested in obtaining sequences.
All my best,
Jacques
Tomaz Vucko, 07-01-2025 13:12
Tomaz Vucko
Re : Pyrenomycete on Alnus glutinosa
Hello Gernot and Jacques!

Thanks for your replies. After some quick reading from old description of species it seems like a very good suggestion. The place of finding I have almost at home soo I will keep a close eye on them. :) 

Best regards!