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30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 06:57

Ethan Crenson

Hi all, Another find by a friend yesterday in Bro

30-06-2025 19:05

ALAIN BOUVIER

Bonjour à toutes et à tousJe cherche à lire l'a

30-06-2025 14:45

Götz Palfner Götz Palfner

This is a quite common species on Nothofagus wood

25-06-2025 16:56

Philippe PELLICIER

Bonjour, pensez-vous que S. ceijpii soit le nom co

29-06-2025 18:11

Ethan Crenson

Hello all, A friend found this disco yesterday in

28-06-2025 17:10

Peter Welt Peter Welt

I'm looking for: RANALLI, M.E., GAMUNDÍ, I.J. 19

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

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Mollisia
Joop van der Lee, 23-11-2014 21:18
Joop van der Lee

Found on a little peace of wood.
Disk: grey/blue layer with cream coloured edges; when top layer is removed the inside is white.
Asco: 8-spored; biseriate in rows of two; 54-62x4-5 um.
Spores: elliptical; 7.5-10.5x2.0-3.0 um
Paraphyses have a slightly rounded top.


The last photo is a little too much on the green side

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Andreas Gminder, 23-11-2014 21:22
Andreas Gminder
Re : unknown asco

Hello,


this is a Mollisia species.


No chance to say anything more, many details are lacking.


 


best regards,


Andreas

Joop van der Lee, 23-11-2014 21:26
Joop van der Lee
Re : unknown asco
What more do you need Andreas?
Andreas Gminder, 23-11-2014 21:37
Andreas Gminder
Re : unknown asco

Hello Joop,


 


when I looked at the posting, the last four pictures weren't there ....


But nevertheless, at least the KOH reaction is important, though I believe that it should be negative here. In that case you will end up with Mollisia cinerea s.l., which still is an aggregation of very similar species were I have not the total clue for separating the different taxa.


You can do the KOH reaction macroscopically by putting a fragment of the hymenium in a drop of KOH 20% on a slide which is lying on a white sheet of paper. You then can see a yellow sap yielding from the fragment (KOH positive) - or no change of colour (KOH negative).


You can also do that microscopically by preparing a small piece of the hymenoum in a water mount and then adding KOH at the side of the cover slip. You can watch through the microscope when the KOH reached your piece of hymenium: The vacuolar bodies in the paraphyses will be dissolved rapidly by the KOH reaching these paraphyses. The dissolving will either result in a yellow colouration (positive) or the mount will stay completely colourless (negative).


 


best regards,


Andreas

Joop van der Lee, 23-11-2014 21:43
Joop van der Lee
Re : unknown asco
Ok, I will check that Rafael. I will let you know the results.
Joop van der Lee, 23-11-2014 22:19
Joop van der Lee
Re : unknown asco
KOH negative Rafael