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12-03-2026 19:44

Ostropoloid fungus on Hibiscus
Enrique Rubio Enrique Rubio

Hi to everybody.Can you give me any suggestions ab

11-03-2026 17:36

Help for Genus and Species ID
Michel Hairaud Michel Hairaud

Bonjour, Je cherche des indices  pour cette réc

12-03-2026 15:45

Dematioscypha cf. olivacea
Åge Oterhals

Dear forum,I found this small discomycete on a ver

05-03-2026 10:07

White apothecia on pine cone
Hulda Caroline Holte

Hello, I found and collected this species growing

08-03-2026 14:05

Helvella lacunosa
Thierry Blondelle Thierry Blondelle

Bonjour à tous,Sur 3 récoltes supposées de H. l

12-03-2026 16:17

Mollisia atlantica
Sylvie Le Goff

Bonjour à tousRécolté dans le 22 en France (ré

12-03-2026 14:37

Octospora
David Wasilewski

These small ascomycota (1-3 mm) ere observed growi

11-03-2026 16:48

Saccobolus minimoides ?
Bruno Coué Bruno Coué

Bonjour, je serais heureux d'avoir votre avis sur

09-02-2026 22:01

Sp
ruiz Jose

Hola, me paso esta colección en madera de pino, t

11-03-2026 14:14

Scopinella on Dryas octopetala
Gernot Friebes

Hi,I would like to share a collection of Scopinell

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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.