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15-07-2025 13:27

Angel Pintos Angel Pintos

Hello, does anyone have access to the following ar

14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

16-01-2023 21:31

Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Gernot Friebes

Hi,do you think this collection could be R. ulmari

25-02-2023 18:36

Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

12-07-2025 16:45

Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'avais d'abord pensé à des stro

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

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Disco on Rumex
Chris Yeates, 02-09-2021 18:17
Chris Yeates
Bonjour tous

This is a discomycete the colour of milky coffee, up to 0.5mm in diameter. The margin is slightly fringed. Growing with Stictis stellata and a yet to be explored pyrenomycete. On dead Rumex stem (probably R. obtusifolius).

Excipular cells rather thick-walled often with a globose guttule, in the living state active ?through Brownian motion. Paler apical cells forming the fringed margin.

Asci 8-spored, with croziers, apex IKI- with Baralsche Löhsung.

Ascospores small, ellipsoid, slightly curved in some views, consistently with two large guttules; 4.2-5.4 x 1.8-2.2µm.

As ever comments/suggestions welcome.

Chris
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Peter Thompson, 02-09-2021 18:23
Re : Disco on Rumex
Hello Chris,

Dasyscyphus castaneus? Parasitic on Stictis spp.

With Best Wishes,
Peter.
Stip Helleman, 02-09-2021 21:04
Stip Helleman
Re : Disco on Rumex
Yes Peter and Chris a very good sugestion, I was thinking in Unguiculariopsis for mycroscopy of the hymenial elements and the excipulum. I think you might find it in Zotto's drive there. There is no valid combination made to my knowledge.

cheers,

Stip
Chris Yeates, 02-09-2021 21:53
Chris Yeates
Re : Disco on Rumex
Thank you both

I doubt I would have managed to run this down without your help. I also doubt I wiould have considered Dasyscyphus and am a little surprised that Graddon saw the hairs as "granulis minutis dense incrustatis" they looked smooth to me, even under oil - I'll have another look.

I'm always amazed at how these parasites with rather specific hosts find them. Although this site is perfect for Stictis with a jungle of Epilobium, Urtica, Rumex, Filipendula etc. and I have collected Stictis stellata very close by, in quantity and on - rather surprisingly - dead leaves of Phormium tenax.

Thanks again, Chris