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28-07-2025 04:59

Richard Droker

Growing on resin (over moss on Tsuga heterophyll)l

28-07-2025 12:34

Enrique Rubio Enrique Rubio

Hi to everybody.I would appreciate any ideas about

13-06-2025 09:41

Josep Torres Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

13-06-2025 16:34

Andgelo Mombert Andgelo Mombert

Bonjour,Un petit discomycète qui me résiste. Il

24-07-2025 19:02

Castillo Joseba Castillo Joseba

De esta mañana en tronco caido de Haya A ver si

21-07-2025 19:22

Ethan Crenson

Hello all,  Here is an Orbilia found by a friend

14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

18-07-2025 23:03

Josep Torres Josep Torres

Hello.Fruitings between 51 and 130 microns in tota

17-07-2025 11:55

Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y abetos, en tieraEjemp

16-07-2025 17:34

Bernard Declercq Bernard Declercq

Hello,I have trouble distinguishing above mention

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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 :)