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25-01-2026 23:23

Delitschia/Lojkania? on wood
Tomaz Vucko Tomaz Vucko

Hello! I found this species that resembles Delitsc

06-02-2026 01:14

Amniculicola
Tomaz Vucko Tomaz Vucko

Hello!How would you name this species? Most perith

04-08-2014 17:35

Pachyella 1898
Leandro Sánchez Leandro Sánchez

Sur branche de feuillus, jusqu'à 22 mm diamètre,

05-02-2026 15:07

Asco in Pinus halepensis
Vasileios Kaounas Vasileios Kaounas

Found on a fallen needle of Pinus halepensis, diam

05-02-2026 06:43

At first glance, a Nitschkia, but...
Stefan Blaser

Hello everybody, Any help on this one would be mu

18-08-2025 15:07

pyrenomycete on dead parts of foliose liverwort from Norway
Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

02-02-2026 21:46

Dark disc on Populus
Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

02-02-2026 14:55

Lichénicole sur Lobaria
Andgelo Mombert Andgelo Mombert

Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

02-02-2026 14:33

Lichénicole sur Peltigera
Andgelo Mombert Andgelo Mombert

Bonjour,Sur le thalle de Peltigera praetextata, ne

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Hymenoscyphus ? on very wet wood
Ethan Crenson, 19-08-2025 20:58
Hi all,

Here is what I believe to be a Hymenoscyphus growing on very wet wood which was lying in mud and water in a New York park. They have a long stipe and convex hymenium. Trees nearby included Fagus, Quercus, Tsuga. My hunch is that the wood is hardwood. 


Asci are IKI+ with croziers, 101-108 x 11.4-12.7µm.


Spores are fusiform, rounded at the ends with multiple guttules, occasionally 1-septate, 14.1-21.6 x 4.1-6.3µm.


Paraphyses branch, with oil content (I think).


The stipe excipulum is textura prismatica, and there is brown pigment among the cells. The medulliary excipulum is textura angularis verging on textura globulosa.


Long ago on this forum I posted something similar (but with a shorter stipe) which Zotto suggested might be Hymenoscyphus varicosporoides. Could this be that as well?


Thanks in advance,


Ethan

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Hans-Otto Baral, 19-08-2025 22:04
Hans-Otto Baral
Re : Hymenoscyphus ? on very wet wood
Hi Ethan

yes, I think H. varicosporioides. I am unaware of such long stalks, however.

Zotto
Ethan Crenson, 19-08-2025 22:19
Re : Hymenoscyphus ? on very wet wood
Hello Zotto and many thanks!  I wonder if the long stipes could be caused by environmental factors.  I will attempt to sequence this one as well.
Hans-Otto Baral, 20-08-2025 06:57
Hans-Otto Baral
Re : Hymenoscyphus ? on very wet wood
I see similar long stipes in a Spanish collection by J. Balda (18.II.2015, folder VBs-). Yours I considered VBs+, but the distinction between the two folders is a bit vague.
Ethan Crenson, 20-08-2025 15:39
Re : Hymenoscyphus ? on very wet wood
In Johnston PR, Baschien C (2020). Tricladiaceae fam. nov. (Helotiales, Leotiomycetes). Fungal Systematics and Evolution 6: 233–242. there is this: 

"The oldest name for this fungus is Hymenoscyphus varicosporoides but it is clearly not a Hymenoscyphus in the modern sense of this genus." ... and it is placed in the genus Tricladium. Why is it clearly not a Hymenoscyphus in the modern sense? 

Thank you also for the clarification about the VBs (rather than oil) in the paraphyses.
Hans-Otto Baral, 20-08-2025 17:27
Hans-Otto Baral
Re : Hymenoscyphus ? on very wet wood
This is a matter of taste. What is for Peter a family is for me a subgroup of Hymenoscyphus. Peter's arguments are mostly genetical. I had accepted Phaeohelotium as a genus but now include it in Hymenscyphus, as I do with Cudoniella. Cudoniella could be used for C. varicosporioides, but the consequences would be very complicated and unsatisfying.