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26-02-2015 18:59

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Good evening,this bizarre fungus grew on many plac

26-02-2015 23:58

John Leach

Hello all On a visit to Anston Stones (South York

25-02-2015 20:52

Enrique Rubio Enrique Rubio

Bonsoir mes amis Je me demande si cette Eutypella

25-02-2015 23:47

Miguel Ãngel Ribes Miguel Ángel Ribes

HiThis small, 1-1,2 mm, with yellow hymenium and w

26-02-2015 16:49

Blasco Rafael Blasco Rafael

Hola, Tiene alguien párr su envio disponible, cla

25-02-2015 16:16

Blasco Rafael Blasco Rafael

Hola, tengo estos pequeños peritecios sobre estie

25-02-2015 18:28

Chris Johnson

GreetingsCan anyone provide me with the following

26-02-2015 07:33

Blasco Rafael Blasco Rafael

Hola, tengo esta pequeña muestra que creo sea una

25-02-2015 16:04

Luc Bailly Luc Bailly

Bonjour à tous,Lierneux, Réserve naturelle doman

22-02-2015 10:29

Castillo Joseba Castillo Joseba

este hongo negro aparece en el mango de una brocha

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Trichonectria on Populus wood
Matthias Reul, 12-12-2023 18:18
Matthias ReulHi altogether,

a few weeks ago Torsten Richter found the hereby presented fungus on a dead twig of Populus tremula. Despite the fact, that there were also plenty of algae on the twig, it does not seem to be lichenicolous, no lichens could be seen near the fungus. 
We thought about the genus Lasionectria first, but no species that we know or found in the literature accessible to us matches, especially the partially apically furcate hairs seem to be pretty unique. W. von Brackel pointed us towards the genus Trichonectria where T. furcatosetosa comes very close, the hairs fit very well, also the spore size and ornamentation. I tried to get fotos of the finely punctate ornamentation in cotton blue, but that was not very successful, however the punctate ornaments were clearly visible and the dead spores in the attachend document show that feature also pretty well. 
The only "problem" for the determination as T. furcatosetosa is that this species should be lichenicolous which is not the case here. 

Is there maybe someone who already found something similar or can contribute any information about the possible identification of this fungus? 
Thanks for any reply.

Matthias
Adam Polhorský, 14-12-2023 19:13
Re : Trichonectria on Populus wood
Oh great! I had this species recently (29.10), but could not ID it further than Lasionectria/Trichonectria.
Do you have the description of T. furcatosetosa? Thank you.
I also had trouble showcasing the obvious ornamentation.
My find was growing on a decorticated, attached twig of Cornus mas on a rather dense algal biofilm. There was no obvious lichen present, but I would not exclude the ID just because of this, perhaps the algae are enough.
Adam
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Matthias Reul, 14-12-2023 19:48
Matthias Reul
Re : Trichonectria on Populus wood
Hi Adam,

thanks for your reply. I also thought maybe furcatosetosa is only occasionally growing on lichens, where of course algae are involved, too. I'll send you the description.
When I have time, I'll try to get some pictures of the ornaments again.

Matthias