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19-04-2015 20:20

Enrique Rubio Enrique Rubio

Hi again Could you help me with this paper? NANN

31-05-2020 19:49

Mirek Gryc

Hi.A colleague from Norway brought one ascocarp of

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Hello, on cowdung I saw these whitish asco's. Foll

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Bonjour,Je ne sais pas si ça peut être la phase

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Dear friends.Looking for a copy of the following w

30-05-2020 20:01

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I pulled off some thick bark from a Pinus sylvestr

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Hello everybody,I need help with a determination o

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Maren Kamke Maren Kamke

Good evening,A pyrenomycetes-species on rosa sp.,

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Found this hairless orange operculate fungi larges

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Bonjour forum,Dans un endroit humide, sur feuille

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Unknown on the branch of Betula?
Mirek Gryc, 07-04-2020 17:56

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
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Nicolas Schwab, 08-04-2020 08:19
Re : Unknown on the branch of Betula?
I think it could be a Melanconis species. This genus was recently revised in that paper. I don't know well this genus.
Alain GARDIENNET, 08-04-2020 08:42
Alain GARDIENNET
Re : Unknown on the branch of Betula?

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

Mirek Gryc, 14-04-2020 20:58
Re : Unknown on the branch of Betula?
Hello everyone.
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 was looking for anamorph but I couldn't find it. However, I observed something similar to conidiospores.

I think I marked wood well. In my opinion it could be Betula?

Could this be Melanconis stilbostoma?

greetings
Mirek
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Alain GARDIENNET, 14-04-2020 23:18
Alain GARDIENNET
Re : Unknown on the branch of Betula?

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

Mirek Gryc, 15-04-2020 07:59
Re : Unknown on the branch of Betula?
Hi 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
Alain GARDIENNET, 15-04-2020 10:27
Alain GARDIENNET
Re : Unknown on the branch of Betula?

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)


 

Mirek Gryc, 15-04-2020 17:51
Re : Unknown on the branch of Betula?
Hi.
Yes, Alnus is possible.
I will do as you say.
Mirek
Alain GARDIENNET, 03-05-2020 22:25
Alain GARDIENNET
Re : Unknown on the branch of Betula?

HGi,


I just examined the fungus. It seems to be Melanconis stilbostoma on Betula. You saw right.


Alain

Mirek Gryc, 04-05-2020 07:56
Re : Unknown on the branch of Betula?
Hi Alain
Thank you very much for your time and identification.

greetings
Mirek