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06-05-2025 13:37

Thomas Flammer

Munk, Anders (1953). The System of the Pyrenomycet

08-05-2025 20:50

Andreas Jacob

Good evening, due to contstant drought I started

07-05-2025 18:29

Francois Guay Francois Guay

I found this small hyaline ascomycete on moist, de

08-05-2025 02:22

Francois Guay Francois Guay

I found this white, hairy ascomycete on the bark o

08-05-2025 18:32

Ethan Crenson

Hello all, I was looking at leaves of Yucca from

08-05-2025 08:59

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia, (España) , reco

07-05-2025 10:18

Thomas Flammer

I have found on Genistae sth. that looks like puli

05-05-2025 09:35

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Marie-Rose d'Angelo de la SociétÃ

06-05-2025 12:52

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia (España),  reco

06-05-2025 13:22

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia (España),  reco

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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 :)