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13-02-2026 18:05

Margot en Geert Vullings

On February 9, 2026, we found these small hairy di

02-02-2026 21:46

Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

13-02-2026 03:30

Tomaz Vucko Tomaz Vucko

Hello! I found these immersed perithecia on a stic

15-02-2026 04:32

Tomaz Vucko Tomaz Vucko

One more specimen that is giving me some descent a

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Tomaz Vucko Tomaz Vucko

Hy!I would ask for some help determing this specie

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Anna Klos

Goedemiddag, Op donderdag 5 februari vonden we ti

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Valencia Lopez Francisco Javier

Hola colegasEstoi interesado en este articulo, Agn

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Bernard CLESSE Bernard CLESSE

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Nogueira Héctor

November 2025 León (SPAIN) ID Help Hello! Thi

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patrice Callard

Bonjour, la face inférieure des feuilles ce certa

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Cup on pitrus (Juncus effusus)
Jan Knuiman, 30-04-2017 16:08
Hello,

We found these very small cups (diameter cup about 0.5 mm) on stalks of dead pitrus and wonder whether it could be a Ciboria species and, if yes, which one. Spores size (free spores in water) was 9.5-11.2 x 4.1-4.6 micron. Asci tops positive with IKI (not Melzer). Parafyses slender, non-capitate and with many small guttuli.


Kind regards,
Jan

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Hans-Otto Baral, 30-04-2017 17:42
Hans-Otto Baral
Re : Cup on pitrus (Juncus effusus)
Hi Jan
is there any sclerotium inside the culm? That would point to a Myriosclerotinia.  
Zotto
Jan Knuiman, 30-04-2017 18:55
Re : Cup on pitrus (Juncus effusus)
Thanks for yor comment Zotto. It's all very small and difficult to find out for me whether there is a sclerotium or not. Does this close up of the stem foot bring you any further?

Jan
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Hans-Otto Baral, 30-04-2017 20:48
Hans-Otto Baral
Re : Cup on pitrus (Juncus effusus)
No, but I wonder whether the large round structure, larger than the apos, on your second photo, is a sclerotium.

Maybe the fungus is a little immature.  The spores seem to be uninucleate there but should be finally 4-nucleate if it is one of the current Myriosclerotinias.