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23-12-2025 08:27

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

07-03-2026 22:22

Volutella?
Josep Torres Josep Torres

Hello.Some very tiny conidiomes collected in the D

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Phaeohelotium parasulphuratus ?
éric ROMERO éric ROMERO

Bonjour tous, Sur cône d'épicea fortement imbu,

06-03-2026 17:51

Orbilia?
William Slosse William Slosse

Good evening all,On March 4, 2026, I found the fol

05-03-2026 16:30

Is this Diaporthe rudis?
François Bartholomeeusen

Dear forum members, On the 2nd of February 2026,

06-03-2026 09:41

indian literature
Alain GARDIENNET Alain GARDIENNET

Hi forum, I'm now looking for another reference c

28-02-2026 11:05

Peziza
Yanick BOULANGER

Bonjour à tousLe 24/02/2026 à Montmacq, devant m

05-03-2026 10:07

White apothecia on pine cone
Hulda Caroline Holte

Hello, I found and collected this species growing

05-03-2026 19:29

Ciboria caucus?
William Slosse William Slosse

Good evening everyone,On March 4, 2026, I found th

19-02-2026 17:49

Ayuda con Tarzetta sp
Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

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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.