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03-02-2026 20:44

Mycoparasite with irregular conidia
Zetti Mario

When I first saw this white mould on an Agaricus s

18-08-2025 15:07

pyrenomycete on dead parts of foliose liverwort from Norway
Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

02-02-2026 21:46

Dark disc on Populus
Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

02-02-2026 14:55

Lichénicole sur Lobaria
Andgelo Mombert Andgelo Mombert

Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

02-02-2026 14:33

Lichénicole sur Peltigera
Andgelo Mombert Andgelo Mombert

Bonjour,Sur le thalle de Peltigera praetextata, ne

31-01-2026 10:22

Lichenicole hypocreale
Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

02-02-2026 09:29

Scutellinia hirta ? sur souche moussue
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pour cette récolte de 2

01-02-2026 19:29

Lambertella sur Olea
Nicolas Suberbielle Nicolas Suberbielle

Bonjour, Marie-Rose D'Angelo (Société Mycologiq

30-01-2026 22:49

Calycina ?
éric ROMERO éric ROMERO

Bonjour tous, Récolté dans les Vosges le 22/10/

31-01-2026 09:17

Small hairy discs on Castanea
Marc Detollenaere Marc Detollenaere

Dear Forum,On decorticated wood of Castanea,I foun

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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!