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24-12-2025 18:12

Ethan Crenson

Hello all, A friend found this Orbilia growing on

24-12-2025 17:08

Hulda Caroline Holte

Hello, I have found this propoloid ascomycete on

23-12-2025 11:27

Louis DENY

bonjour forum,sur débris de bois de feuillu (acer

20-12-2025 10:49

Mirek Gryc

Hi. „I doubt it is possible to identify this ti

23-12-2025 08:27

Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

21-12-2025 09:32

Josep Torres Josep Torres

Hello.A tiny ascomycete found embedded in wood in

21-12-2025 21:32

Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

22-12-2025 23:38

Patrice TANCHAUD

Bonsoir, récolte sur un mur en pierre, apothéci

21-12-2025 12:34

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

22-12-2025 00:47

Patrice TANCHAUD

Bonsoir, récolte à proximité du milieu dunaire

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bitunicate ascomycete on dead Sphagnum from Norway
Lothar Krieglsteiner, 18-08-2025 15:17
Lothar Krieglsteiner... on 6.7.25 in a subarctic mire near a small lake.
The 2-celled spores are slighly to strongly constricted at the septum, they are multiguttulate in living state, the guttules confluent in dead stage. The spores are about (22)-28-35/11-14 µm large. There are hyaline and ramifying pseudoparaphyses (I am not sure if the term is correct here). 
Who can provide me with a hint?
Yoüurs, Lothar
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Georges Greiff, 19-08-2025 13:40
Re : bitunicate ascomycete on dead Sphagnum from Norway
Hi Lothar,

Maybe it is Bryobroma (syn. Bryomyces), similar to a previous collection you made from Nowellia. The large, pigmented mycelium froming a reticulate structure over the host cells is a good feature for the genus. I am not certain.

Other options include relatives of the algicolous / lichenised Collemopsidium or Monascostroma. Any further look at the mycelium should help to narrow it down.

All the best,
George
Lothar Krieglsteiner, 19-08-2025 20:52
Lothar Krieglsteiner
Re : bitunicate ascomycete on dead Sphagnum from Norway
Hello George,
thank you very much for your proposals. I will see if I can come closer. In this case I will write again. 
Yours, Lothar