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21-08-2025 18:09

Edmond POINTE Edmond POINTE

Bonjour Amis mycologues.Trouvé sur crottin de che

20-08-2025 19:04

Ethan Crenson

Hello, This asco was found on the same wood as my

21-08-2025 02:18

Stefan Jakobsson

On a necrotic section of a living Tilia cordata I

18-08-2025 23:15

Zoe Vélez Zoe Vélez

Hola foro, gracias por aceptar la creación de mi

19-08-2025 20:58

Ethan Crenson

Hi all, Here is what I believe to be a Hymenoscyp

12-08-2025 19:44

Enrique Rubio Enrique Rubio

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

18-08-2025 15:17

Lothar Krieglsteiner Lothar Krieglsteiner

... on 6.7.25 in a subarctic mire near a small lak

18-08-2025 15:07

Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

19-08-2025 16:27

Paul Cannon

Hello all I have spent some time trying to work o

18-08-2025 22:59

Yanick BOULANGER

BonsoirVoici un asco récolté le 08/08/2025Comme

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Cryptodiscus on fern stem?
Edvin Johannesen, 12-11-2019 14:18
Edvin Johannesen
Hi! I have a very small Cryptodiscus-like specimen on a fern stem. Ascomata 0.2-0.3 mm in diam.  The shown spore measures (in KOH) ca. 45x5 microns. Septate, but hard to see how many septa.

I have not come across a Cryptodiscus on ferns. Am I in the right genus or is this another Ostropales?

Thanks for any hints.

Edvin
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Hans-Otto Baral, 12-11-2019 16:05
Hans-Otto Baral
Re : Cryptodiscus on fern stem?
Hmm,this needs at least a phot of an ascus and a test in Lugol: in Cryptodiscus and Karstenia the entire hymenium gets colorated.
Peter Püwert, 12-11-2019 17:45
Peter Püwert
Re : Cryptodiscus on fern stem?
We've had this before, right?


Greetings Peter.
Edvin Johannesen, 12-11-2019 18:08
Edvin Johannesen
Re : Cryptodiscus on fern stem?
The entire (sub) hymenium is staining bluish-green in Lugol. See photo of this and a few photos of spores and asci in water.
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Edvin Johannesen, 12-11-2019 18:09
Edvin Johannesen
Re : Cryptodiscus on fern stem?
A couple of shots using phase contrast.
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Hans-Otto Baral, 12-11-2019 18:21
Hans-Otto Baral
Re : Cryptodiscus on fern stem?
So Peter's idea seems to be good!
Edvin Johannesen, 12-11-2019 18:31
Edvin Johannesen
Re : Cryptodiscus on fern stem?
So - K. idaei, then?

Thanks to both :)
Hans-Otto Baral, 12-11-2019 20:17
Hans-Otto Baral
Re : Cryptodiscus on fern stem?
Yes, it seems so.
Edvin Johannesen, 12-11-2019 20:19
Edvin Johannesen
Re : Cryptodiscus on fern stem?
Thanks!