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18-08-2025 22:59

Yanick BOULANGER

BonsoirVoici un asco récolté le 08/08/2025Comme

18-08-2025 15:35

Lothar Krieglsteiner Lothar Krieglsteiner

.. in subarctic forest at side of small stream, ac

18-08-2025 16:01

Lothar Krieglsteiner Lothar Krieglsteiner

.. on water-soaked Betula wood lying in a small st

18-08-2025 17:52

Yanick BOULANGER

BonjourAu fil des conversations, j'ai lu que Hyalo

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

31-12-2021 12:12

Georges Greiff

Happy New Year to All! I was hoping somebody coul

15-08-2025 12:47

Philippe PELLICIER

Bonjour, j'ai récolté cette Scutellinia au Col d

15-08-2025 21:50

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,Pourriez-vous m'aider à

13-08-2025 12:17

Castillo Joseba Castillo Joseba

De ayer en la misma muestra que el Ascobulus anter

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Cistellina-Hyphodiscus on Nemania serpens?
Marc Detollenaere, 10-03-2020 20:50
Marc Detollenaere

Dear Forum,


Sunday I found an old Nemania serpens with some small cream-coloured apothecia on it.


They had clavate hairs(19-25x6µ) with blunt tuberculate warts. No KOH reaction.


Asci measured 26-43x5.5µ and had croziers. Spores were hyaline and biguttulate(4.3-4.8x2.2µ);


Cistellina stereicola seems to be close but is associated with Stereum instead of Nemania.


Any idea?


 


Marc

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Hans-Otto Baral, 10-03-2020 21:06
Hans-Otto Baral
Re : Cistellina-Hyphodiscus on Nemania serpens?
How about ascus amyloidity?
Marc Detollenaere, 10-03-2020 23:49
Marc Detollenaere
Re : Cistellina-Hyphodiscus on Nemania serpens?
blue coloration apical apparatus with IKI
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Hans-Otto Baral, 11-03-2020 00:15
Hans-Otto Baral
Re : Cistellina-Hyphodiscus on Nemania serpens?
Hmm, I can hardly see it, but I believe.

Cistella is not eay, but why not again C. geelmuydenii, like the one of William Slosse

Zotto
Marc Detollenaere, 12-03-2020 22:34
Marc Detollenaere
Re : Cistellina-Hyphodiscus on Nemania serpens?

Thank you for your answer Zotto.


Do you think geelmuydenii is still possible although IKI only gives a mild blue coloration of the upper part of the apical apparatus. I used IKI several times but no hemiamyloidity was seen.


 


Marc

Hans-Otto Baral, 13-03-2020 07:49
Hans-Otto Baral
Re : Cistellina-Hyphodiscus on Nemania serpens?
I am not sure. How high was the concentration? Did you try KOH-pretreatment? Or Melzer? Both could clarify if the reaction is enhanced (KOH, after washing add IKI or MLZ) or suppressed (MLZ).
Marc Detollenaere, 14-03-2020 09:10
Marc Detollenaere
Re : Cistellina-Hyphodiscus on Nemania serpens?

Good morning Zotto,


I used both Melzer and Lugol after pretreatment with KOH. In Melzer a had a minimal blue coloration, in Lugol the blue was more pronounced.


I cannot tell you what the concentrations are but both products came from mykoshop.


 


Marc

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Hans-Otto Baral, 14-03-2020 10:18
Hans-Otto Baral
Re : Cistellina-Hyphodiscus on Nemania serpens?
o.k., sorry for the inconvenience. Not much clearer, probably not only because of the unsharpness.

I must admit I am not really an expert of Cistella, and my identifications are therefore only tentative. For a thorough comparison of available docus and literature I have no time.

In the type of Pezizella roseoflavida which I have restudied I noted IKI light dirty reddish, MLZ-, after KOH MLZ light blue. The hemiamyloid (dirty red) reaction is well visible on a photo collage by Matthias Reul of a sample by Torsten Richter (#7574) in my folder (no KOH-pretreatment shown).

Zotto
Marc Detollenaere, 14-03-2020 14:07
Marc Detollenaere
Re : Cistellina-Hyphodiscus on Nemania serpens?

It is clearly a very difficult group.


Thanks for your answers