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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

14-07-2025 11:19

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

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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Thecotheus ??? on sheep dung
Andreas Gminder, 19-01-2020 15:20
Andreas GminderHello,


on sheep dung after 14 days in culture I found a very tiny turbinate ascomycete, by chance with 40x magnification. It nevertheless was fully mature. The apothecium (only one I found) was first translucently whitsh, but turned yellow within some minutes. And this yellow pigment is also strikingly vivid to see as paraphyses vacuoles.
The most interesting feature was the extrem rim on the ascus tip, as I know it from species of Thecotheus. But I found no Thecotheus with such feature, so I suspect that it is not this genus. But which one?

Thank you for any ideas.

best,
Andreas
  • message #60991
  • message #60991
  • message #60991
Hans-Otto Baral, 19-01-2020 16:09
Hans-Otto Baral
Re : Thecotheus ??? on sheep dung
Hallo Andreas

hope you got some measurements? No photo of apo parts with excipulum?

The yellow vacuoles point to a Thelebolus, not Thecotheus which would have amyloid asci as I recall (did you test IKI?). But the ascus tip would be very unusual. The yellow vacuolar pigment can hardly be formed within a short time, it is present in the optimum state.

Zotto
Andreas Gminder, 19-01-2020 16:20
Andreas Gminder
Re : Thecotheus ??? on sheep dung
Hello Zotto,

meanwhile I got the hint that it might just be a young Saccobolus species. Which could well be, becuase I had one split ascus with a spore packet of a Saccobolus in the same preparation.
I did not test with IKI, and I had only this one very tiny (diam. 100 µm) fruitbody.
But hopefully the will grow more in the next day perhaps.

So at the monent I think it is a premature Saccobolus.

best,
Andreas
Hans-Otto Baral, 19-01-2020 16:28
Hans-Otto Baral
Re : Thecotheus ??? on sheep dung
This is actualy true, I wasn't aware of yellow VBs in Saccobolus, they occur in S. truncatus and also S. citrinus in my folders.  The yjoint gel sheath around the spores supports this genus.
Michel Delpont, 19-01-2020 16:49
Michel Delpont
Re : Thecotheus ??? on sheep dung
Of course, certainly a Saccobolus; you have to wait for more maturity to see the ornamentation of the spores as well as their size. The top of the ascus also corresponds well to gender. There are several species with a yellow pigment, the most common being S. citrinus.

Michel.