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Edvin Johannesen Edvin Johannesen

A friend sent me a few Betula seeds with tiny blac

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Hans-Otto Baral Hans-Otto Baral

Dear all I want to ask you if you have any recent

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Stefan Jakobsson

Hi forum, On a herbaceous stem, possibly Aegopodi

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Good morning,I was wondering if anyone recognizes

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Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

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Bonjour, Sur branches mortes de Salix en place (m

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Hello forum!Touvé près de Belfort, altitude 350m

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Ethan Crenson

Hello, Last week in New York City this Orbilia wa

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On Fagus branch
Margot en Geert Vullings, 19-02-2025 19:25
On a fallen Fagus branch we found these bumps, sometimes black broken through, under which black perithecia are visible, without a black ring around the stroma.
The perithecia have a neck (not clearly visible in the photos) that is about as long as the bulb and lie just under the bark in the horizontal plane, usually with 3-5 together .
The spores are brown with 3 septs and show large guttulles, usually one in each segment.

Measured in water: 30.2 - 35.8 (39.6) × (10.3) 10.32 - 11.5 (11.8) µm; Qe = 3

The ascus tops show no reaction in Melzers and Congo red.

We found Prosthecium ellipsosporum, which could fit some spore size and also does not have a black rim around the stroma, only this one has been described on Carpinus and these spores have appendages.
Maybe there are other options?
Thanks in advance, Margot&Geert
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