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14-03-2026 13:51

Thierry Blondelle Thierry Blondelle

Hi everybody Under Quercus ilex, i hesitate to na

12-03-2026 19:44

Enrique Rubio Enrique Rubio

Hi to everybody.Can you give me any suggestions ab

11-03-2026 17:36

Michel Hairaud Michel Hairaud

Bonjour, Je cherche des indices  pour cette réc

12-03-2026 15:45

Åge Oterhals

Dear forum,I found this small discomycete on a ver

05-03-2026 10:07

Hulda Caroline Holte

Hello, I found and collected this species growing

08-03-2026 14:05

Thierry Blondelle Thierry Blondelle

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

12-03-2026 16:17

Sylvie Le Goff

Bonjour à tousRécolté dans le 22 en France (ré

12-03-2026 14:37

David Wasilewski

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

11-03-2026 16:48

Bruno Coué Bruno Coué

Bonjour, je serais heureux d'avoir votre avis sur

09-02-2026 22:01

ruiz Jose

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

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Lophiostma spec.
Thomas Flammer, 26-02-2025 21:14

I have unsuccessfully tried to determine with the key Key to hysterioid fungi on bark and wood in Scandinavia, AGARICA vol. 42 103. 
substrate: Picea, rotten wood, pretty much brittle, on bark
Fruiting body / habit / growth form: immersed, black, like a little mussle
Spores 1: 31.2 - 40.6 x 8.5 - 10.2 µm - Q: 3.55 - 4.10 (Ø LxB: 34.8 x 9.2 ØQ:3.8 N: 9)
Spores 2: 31.6 - 37.9 x 8.4 - 10.2 µm - Q: 3.31 - 4.32 (Ø LxB: 34.3 x 9.3 ØQ:3.7 N: 9)
Spore characteristics: 7-9fach septated, ends on old spores sometimes a little bit brighter
Ascus: biseriat
Paraphyses: filamentous
Spores : brown
Congo red: negativ
Melzers reagent: IKI-

  • message #81713
  • message #81713
Till Lohmeyer, 26-02-2025 22:26
Re : Hysteroid fungus on wood of Picea
Did you try Oedohysterium (Hysterium) insidens?


https://fungi.myspecies.info/all-fungi/oedohysterium-insidens


according to Zogg (1962) and other authors the spores don't match perfectly but come close. they are brown and the number of cells fits. 

Best regards from Bavaria
Till
Alain GARDIENNET, 27-02-2025 18:00
Alain GARDIENNET
Re : Oedohysterium insidens
Hi, 

I'm having trouble seeing if the ascomata are hysterioid-shaped or mytilinidioid-shpaed.
From what I can see it would be more like mytilinidioid.
A vertical section would be useful.
Thus your fungus grows on Picea. And at last, ascospores don't match. I join a paper to compare with the true Oedhysterium insidens.
I think your fungus belongs to Mytilinidiaceae.
And as I'm preparing a thesis on the subject, I'd be very happy to study it.
If you'd be willing to send me as much material as you can, here's my address:
Alain GARDIENNET
14 rue roulette 
21260 VERONNES (France)
If you want you can contact me at  : agardiennet@gmail.com. It's a very interesting find

Alain GARDIENNET, 27-02-2025 18:02
Alain GARDIENNET
Re : Oedohysterium insidens
here's the paper I wrote a few years ago. It gives a good idea of what O. insidens is.
Thomas Flammer, 27-02-2025 21:23
Oedohysterium insidens
I will dispatch the entire sample material to you by tomorrow. Regards.
Gernot Friebes, 28-02-2025 10:03
Re : Oedohysterium insidens
Hi,

I wonder if it could be a lophiostomataceous fungus, maybe something around Lophiostoma macrostomoides. A vertical section of the ascomata would indeed help, as you said, Alain. But soon we will know more!

Best wishes,
Gernot
Alain GARDIENNET, 28-02-2025 10:14
Alain GARDIENNET
Re : Oedohysterium insidens
Exact Gernot ! Apex of lophiotomoid ascomata can be "mytilinidiod" .L. macrostomoides on Picea would be  curious, but why not ?
Thanks,Alain

PS : Verpa bohemica is already there, Morchella deliciosa perhaps, I will check this afternoon. Morels or mussels , that's a question :)