15-09-2025 14:40
Nicolas VAN VOOREN
Hello.I'm searching for a digital copy of the seco
14-09-2025 22:16
Philippe PELLICIERApothécies petites jusquà 3 mm, oranges, avec de
13-09-2025 14:01
Thomas Flammerdark brown apothecia, splitIKI-Spores biguttulate
10-09-2025 17:18
Blasco Rafael
Hola, encontre este estiercol de vaca estos apotec
13-09-2025 14:10
Wim de GrootWe found this hymenoscyphus on rubus fruticulosis.
11-09-2025 16:57
Jason Karakehian
Our revision of Marthamycetales (Leotiomycetes) is
10-09-2025 23:53
Marcel Heyligen
Found on Robinia pseudoacasia together with Diapor
02-09-2025 11:34
Thomas Læssøehttps://svampe.databasen.org/observations/10527903
Hello all
Can anyone help me identify this unknown species?
It's probably a Betula branch? I'm not sure because I found it in a place where most trees were cut down. There were lots of branches on the ground, various types of trees.
Spore dimensions (H2O): Me = 19.8 × 7.6 µm; Qe = 2.6
Thank you in advance!
Regards
Mirek
I agree, but informations are lacking.
More you'll give informations, more you'll have answers.
Especially, please, or give a more complete description of ascospores, observed in water. Because in this genus, appendages are often present.
Concerning host, it would be better to know it exactly , and not probably. A website concerning microscopic wood anatomy can help you.
Alain
First of all, thank you Nicolas & Alain for the hints!
I did not answer for a long time, because it seemed to me that the sporocarps were unripe ripe. I haven't seen free spores.
Now I could see the spores released from ascus. All the released spores do not have polar appendages. However, spores mature in ascus have outgrowths that disappear immediately after the spores are released.
The dimensions of the spores are in the photo.
I think I marked wood well. In my opinion it could be Betula?
greetings
Mirek
Hi Mirek,
I think you should compare to Melanconis marginalis (read Jaklitsch & Voglmayr, 2020).
Perhaps the wood is Alnus alnobetula and the fungus Melanconis marginalis subsp. tyrolensis or marginalis.
I would have liked to study it, but Postal services are perhaps out.
Alain
I saw this work: Jaklitsch & Voglmayr, 2020. I also thought about the species you are proposing. My experience in this topic is too small and, unfortunately, I can not clearly determine to which genre the features of my collection fit more?
In Poland the situation is less tragic than in France. Postal services work though with some restrictions! I don't know how it is in France?
I leave the decision to you. If you think the situation is good enough to send, then let me know, or just send me the address to a private email.
Best regards and thank you
Mirek
Hi Mirek,
You can try sending a piece, but keep some material.
Then, let's wait and see.
Do you think Alnus alnobetula is possible ?
Thanks,
Alain Gardiennet
14 rue Roulette
21260 VERONNES (France)
Yes, Alnus is possible.
I will do as you say.
Mirek
HGi,
I just examined the fungus. It seems to be Melanconis stilbostoma on Betula. You saw right.
Alain
Thank you very much for your time and identification.
greetings
Mirek