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07-12-2025 16:07

Arnold Büschlen

Hallo, ich habe in einer Moos-Aufsammlung (epiphy

08-12-2025 21:04

Mark Stevens

"Hello everyone,I'm relatively new to microscopy (

09-12-2025 12:06

Andgelo Mombert Andgelo Mombert

Bonjour,Je recherche l'article concernant Hypobryo

08-12-2025 18:59

Lothar Krieglsteiner Lothar Krieglsteiner

.. found by a seminar-participant, I do not know t

08-12-2025 21:18

Buckwheat Pete

Hello everyone, Is it possible to at least approx

07-12-2025 17:43

Malcolm  Greaves Malcolm Greaves

This Helvella was in mixed woodland. Uniform cupul

08-12-2025 17:37

Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

16-03-2014 22:00

Ralph Vandiest Ralph Vandiest

Hello,I found this species a few months ago but ha

08-12-2025 13:39

Thomas Læssøe

https://svampe.databasen.org/observations/10572899

07-12-2025 22:43

Andreas Millinger Andreas Millinger

Good evening, tried to determine with Munks Valsa

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Hypoxylon/Nemania?
Mirek Gryc, 30-03-2020 10:57
Hello all
I have a problem with Hypoxylon growing on Acer branches. However, I am not sure of the substrate because Fraxinus branches also lay nearby. This substrate, however, is unlikely.
I can't show Asci. Sporocarps very mature and only spores in the preparation.
I microscoped several fruitbodies. In part I met with conidiospores. Similarly, they appear in Hypoxylon macrocarpum but the dimensions of mine are definitely larger than those given for this species.
Maybe I'm not looking for genus? ... maybe Nemania?

This is not clearly seen in the pictures, but the spores contain a large number of tiny oil droplets, arranged in polar directions.

Spores: Me = 20.2 × 10.3 µm ; Qe = 2

Thank you in advance for your help.
Mirek
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Alain GARDIENNET, 30-03-2020 11:42
Alain GARDIENNET
Re : Hypoxylon/Nemania?

Hi,


I think you should compare to Hypoxylon fraxinophilum, occuring, of course, on Fraxinus.


Alain

Alain GARDIENNET, 30-03-2020 11:45
Alain GARDIENNET
Re : Hypoxylon/Nemania?

Here :


http://pyrenomycetes.free.fr/


Under H. intermedium

Mirek Gryc, 30-03-2020 12:56
Re : Hypoxylon/Nemania?
Hi Alain
Your suggestion makes sense.
I will check for certainty some characteristic details that I have not observed, but appear in the description of this species.
Conidiospores were probably accidentally applied to Hypoxylon sporocarps? ... maybe during transport?
I have just researched another collection of the same species found elsewhere ... I did not observe conidiospores.
Thank you
Mirek
Mirek Gryc, 30-03-2020 21:04
Re : Hypoxylon/Nemania?
Alain, you were right about the substrate.
Next to it I found Hypoxylon cercidicola and this one grows into Fraxinus.
Once again, thank you and best regards.
Mirek.
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