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10-03-2020 20:50

Marc Detollenaere Marc Detollenaere

Dear Forum, Sunday I found an old Nemania serpens

14-03-2020 01:59

Sigrid Jakob

A recent find on a fresh piece of cervid dung, New

13-03-2020 17:40

Blasco Rafael Blasco Rafael

Hola, a ver si alguno de Ustedes reconoce esta esp

09-03-2020 23:18

Ethan Crenson

Hello all, Found yesterday in New York City.  Th

11-03-2020 18:46

Sigrid Jakob

I've recently found a six-celled Sporormiella that

13-03-2020 17:53

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2020

13-03-2020 15:03

Castillo Joseba Castillo Joseba

Me mandan el material desde Galicia,  elo recolec

13-03-2020 12:51

Castillo Joseba Castillo Joseba

Recolectada en madera de enredadera (Hedera héli

12-03-2020 12:24

Pascal RIBOLLET

Bonjour, J'ai récolté ce pyrénomycète sur vie

12-03-2020 15:45

Sigrid Jakob

Found on freshly collected deer dung in the Bronx,

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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