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23-12-2025 08:27

Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

21-12-2025 09:32

Josep Torres Josep Torres

Hello.A tiny ascomycete found embedded in wood in

21-12-2025 21:32

Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

22-12-2025 23:38

Patrice TANCHAUD

Bonsoir, récolte sur un mur en pierre, apothéci

21-12-2025 12:34

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

22-12-2025 00:47

Patrice TANCHAUD

Bonsoir, récolte à proximité du milieu dunaire

21-12-2025 21:40

Isabelle Charissou

Bonjour, j'aimerais connaitre les références de

20-12-2025 23:08

Patrice TANCHAUD

Bonsoir, récolte sur sol sablonneux dans l'arriÃ

21-12-2025 01:54

David Chapados David Chapados

Hi,Would it be possible to find the species with t

20-12-2025 15:47

Mirek Gryc

Hi.These grew on pine wood that was heavily covere

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Hymenoscyphus sp.
Mirek Gryc, 14-10-2020 07:52
Hi
Last Sunday I found this Hymeoscyphus growing on leaves lying on the muddy ground. multi-species forest, including Populus. Due to time constraints, I only took a few photos. The spores didn't want to release from the ascus so I put the collection in the ripening room. Unfortunately, I moistened too little and the ascomata gently dried up. Further breeding attempts did not give adequate results. However, looking at the photos taken just after the harvest, I came to the conclusion that it may be quite an interesting species. Similar to H. imberbias but certainly not.
The content of paraffins is very weakly refracting light and tends to blend together. Ascus much longer than that of H. Imberbis. A few measured slightly exceeded 100 µm.
The only similar one that I could find in the literature is Phaeohelotium binucleatum. The problem is, I didn't capture the nucleic droplets in the photos. Some spores show something similar to them, but I'm not sure if it's them?

Anyway, I am posting photos hoping for your opinion.

Spores:

(9.5) 10.2 - 11.2 (12.2) × (3.7) 3.8 - 4.1 (4.3) µm
Q = (2.4) 2.7 - 2.8 ; N = 6
Me = 10.9 × 4 µm ; Qe = 2.7

  9.53 4.03
10.78 3.79
12.23 4.32
10.25 3.70
11.25 3.99
11.08 4.14

greetings
Mirek
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Lothar Krieglsteiner, 14-10-2020 08:15
Lothar Krieglsteiner
Re : Hymenoscyphus sp.
Hello Mirek,
without fully comparing the measurements (no time), I see some similiarities with Hymenoscyphus immutabilis.
Best, Lothar
Mirek Gryc, 14-10-2020 08:36
Re : Hymenoscyphus sp.
Hi Lothar
I didn't know this genre but it seems it will be this genre.
Many thanks
Mirek
Hans-Otto Baral, 14-10-2020 10:20
Hans-Otto Baral
Re : Hymenoscyphus sp.
I agree. The apos are probably over 1 mm? H. immutabilis is comparatively large. The paraphysis content is perfect, not at all as refractive as in imberbis. But with IKI it causes a strong red reaction with extruding minute granules.
Mirek Gryc, 14-10-2020 10:26
Re : Hymenoscyphus sp.
Hi Zotto
The Ascomats were quite small, about 1mm, probably because, as I said, the fruiting bodies were not yet mature enough.
The contents of the paraphyses, exactly as you say :)
Thank you
Mirek