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31-12-2021 12:12

Georges Greiff

Happy New Year to All! I was hoping somebody coul

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Philippe PELLICIER

Bonjour, j'ai récolté cette Scutellinia au Col d

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Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,Pourriez-vous m'aider à

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Castillo Joseba Castillo Joseba

De ayer en la misma muestra que el Ascobulus anter

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Francois Guay Francois Guay

I found this species on decaying wood in Québec,

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Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.In the course of forthcoming paper about Geo

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Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, a few days ago I have collected this Tarzet

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Peter Welt Peter Welt

What could this be? Fromm Torsten Richter Any ide

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Castillo Joseba Castillo Joseba

De ayer en KK de vacunoAscas con 20 o mas esporasa

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Enrique Rubio Enrique Rubio

Could someone send me a pdf copy of this article?S

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Salix pyreno puzzle
Chris Yeates, 20-04-2021 14:18
Chris Yeates
Bonjour tous

A collection of a few small twigs/narrow branches is throwing up several such puzzles, It is extra annoying when the material is in good condition and seems to be presenting good identification characters!

So here a mostly superficial "pyrenomycete" which occurs both clustered and scattered on a damp fallen Salix cinerea twig, The ascomata measure up to 450µm are black with a sort of granular surface. Asci are 8-spored and have distinctive rather long, tapering "stalks" filled with protoplasm, no paraphyses or similar were present. Spores as in the images - hyaline, 1-septate, filled with globular granules, 15.5-19.1 x 6.5-7.1µm.

Before looking under the microscope I had considered genera such as Nitschkia, but thes spores alone seem to rule that out. So I am confused, as ever any suggestions would be welcome.

Chris
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Enrique Rubio, 21-04-2021 16:47
Enrique Rubio
Re : Salix pyreno puzzle
Thanks a lot, Chris.
I'm sorry, I can't help you but I can't think of anything acceptable. My first impression was Plagiostoma, but the asci are certainly not those of a Diaporthales.