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23-09-2025 13:31

Thomas Læssøe

https://svampe.databasen.org/observations/10534623

15-10-2025 16:39

Edvin Johannesen Edvin Johannesen

These tiny (0.2-0.6 mm), white, pulvinate apotheci

03-10-2025 13:44

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde on Populus

13-10-2025 19:05

Louis DENY

Bonjour forumSur tronc décortiqué de feuillu x,

17-02-2013 21:11

Peter Welt Peter Welt

Jamoni, P.G. 1998. Un nuovo discomicete coprofilo

11-10-2025 20:27

Marcel Heyligen Marcel Heyligen

Found on a barked branch, 14 mm in diameter, of Ro

11-10-2025 14:20

Jean-Luc Ranger

bonjour à tous, Je ne vois pas comment l'on peut

09-10-2025 22:14

S. Rebecca

We just had the Bavarian Mycology Conference in Au

10-10-2025 00:49

Ethan Crenson

Hello all, This was found last weekend on a hardw

06-10-2025 15:57

David Chapados David Chapados

Hi, Could anyone help me with this Lophiostoma? 

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mollisioid but cartilaginous disco (USA)
Andreas Gminder, 13-01-2016 07:55
Andreas Gminder

Dear collegues,


I have recieved a collection of discomycetes from USA, which were held for a Mollisia species. Already after re-hydrating them and preparing a section, it was obvious that the whole apothecium is quite rubber-like and not soft as a Mollisia.


The excipulum is brown, in KOH greyish-brown, consisting of roundish-elongate cells, and an abundant subiculum was present. The medulla is a textura with cells having thick gelatinous walls.
Asci eightspored, IKI blue
The spores are fusifirm to elongate-elliptic, in KOH non-septate, but in a water mount they all looked septate even within the asci (!), approx. 5-7(8) x 2-2,5 µm


Any ideas on the genus at least?


thank you and best regards,


Andreas

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Hans-Otto Baral, 13-01-2016 09:35
Hans-Otto Baral
Re : mollisioid but cartilaginous disco (USA)
Hi Andreas
is it impossible to get an idea of the paraphysis contents? Even if this sample is very old this must not be impossible. I assume you checked any behaviour against KOH?

The gel between the medullary cells is not that thick, is such impossible for a Mollisia?

Zotto
Andreas Gminder, 14-01-2016 06:51
Andreas Gminder
Re : mollisioid but cartilaginous disco (USA)

Dear Zotto,


the paraphyses had a refractive content and as far as I could see it was the whole length. But I didn't get the hymenium rehydrate properly, even not in KOH
KOH-reaction was negative.


The excipulum has no clear round cells, but only scattered roundish cells between unequal other cells. And a medulla of such kind I have never seen in Mollisia before, no sign of a textura intricata of thin hyphae.Already when cutting the apothecium it was completely different, like rubber and not soft as Mollisia is. I had the idea that this rubbery consistency might give an idea in which group this might belong to.


May be I should try a better section, but that has to wait ....


thank you and best regards,


Andreas

Hans-Otto Baral, 14-01-2016 09:31
Hans-Otto Baral
Re : mollisioid but cartilaginous disco (USA)
When I look at a section of, e.g., M. olivascens, I see almost no roundish cells 8see below).
But I admit, a thick-walled I cannot remember in a species of Mollisia. Anyhow I would expect that genetic data on this woud place ot there.
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