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05-07-2025 12:38

Pyrenomycetous fungi on dead Juniperus twig
Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

01-06-2025 09:37

Octospora
Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

04-07-2025 20:12

Black thready anamorph
Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Ascomycete on a herbaceous stem.
Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Salvia leaf parasite
Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

En tallo de herbaceas 1102
Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Melampsora ??? en Salix
Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

03-07-2025 20:08

Yellowish asco on submerged Larix needles
Francois Guay Francois Guay

I found this interesting yellowish asco growing on

01-07-2025 23:37

Help with a Pleosporal.
Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

hymenoscyphus albidus
Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

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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!