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31-10-2025 09:19

Lothar Krieglsteiner Lothar Krieglsteiner

Can somebody provide me with a file of:Rogerson CT

30-10-2025 03:53

Ethan Crenson

Hi all,  I would like an opinion on whether this

09-08-2025 13:13

Maria Plekkenpol Maria Plekkenpol

Hello,Yesterday I found these on burnt soil. Apoth

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

29-10-2025 19:02

Castillo Joseba Castillo Joseba

De la pasada semana en rama posiblemente de hayaPi

25-11-2016 13:54

Stephen Martin Mifsud Stephen Martin Mifsud

Hi, I found numerous seeds of Washingtonia robusta

28-10-2025 22:22

Bernard Declercq Bernard Declercq

Hello.I'm searching for the following paper:Punith

27-10-2025 19:51

Peter Welt Peter Welt

Who has this article? Doveri, F. 2007. Sporormiel

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

28-10-2025 11:29

Tanja Böhning Tanja Böhning

Hello, I found this very small (ca 0,5mm) yellow

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Yellowish apothecias on Sorbus
Thomas Flammer, 07-07-2024 10:07
I am struggeling with some tiny yellowish apothecias I found on bark of Sorbus.
1. how can i differentiate Mollisia from Pyrenopeziza? What is microscopically the difference?
2. I searched the Internet, since I do not have any literature about Mollisia and Pyrenopeziza, except using asco-sonnenberg. Any hint is welcome.
Thanks, I hope this is an appropriate question in this high-profile forum.
Regards
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Hans-Otto Baral, 07-07-2024 10:21
Hans-Otto Baral
Re : Yellowish apothecias on Sorbus
I am not sure about the family of this fungus. Important is to study the excipulum, best in a section, but also squash mount may be helpful.

Is it hyaline or brown? Is it of globose cells or elongate?
Thomas Flammer, 07-07-2024 11:19
Re : Yellowish apothecias on Sorbus
Thanks a lot, I have added a squash image.
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Hans-Otto Baral, 07-07-2024 11:42
Hans-Otto Baral
Re : Yellowish apothecias on Sorbus
Very pale, but cells roundish.

On your first micro I see one paraphsyis. It lacks the refractive content of a Mollisia, so that group can safely be excluded.

How large are the apos, 0.3 mm?

Such "characterless" fungi are difficult to classify.
Ingo Wagner, 07-07-2024 15:32
Ingo Wagner
Re : Yellowish apothecias on Sorbus
Hello Thomas!

You can try to better represent the elements from the marginal area and the paraphyses.

Greetings
Ingo Wagner
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Thomas Flammer, 07-07-2024 20:10
Re : Yellowish apothecias on Sorbus
Tx Ingo, attached the suggested picture.
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Hans-Otto Baral, 07-07-2024 21:43
Hans-Otto Baral
Re : Yellowish apothecias on Sorbus
Woww, this changes all. Now the paraphyses contain long, strongly refractive vacuoles and the excipulum is more brownish.

The spores look lke having a few minute drops near each end.

I fear I do not know. A bit similar is Chlorosplenium chlora but that is up to 1-2 mm large.
Lothar Krieglsteiner, 10-07-2024 09:35
Lothar Krieglsteiner
Re : Yellowish apothecias on Sorbus
"It lacks the refractive content of a Mollisia, so that group can safely be excluded." ... and why not a Mollisia now? Refractive vacuolar bodies and dark globulosa?
Hans-Otto Baral, 11-07-2024 20:26
Hans-Otto Baral
Re : Yellowish apothecias on Sorbus
Hi Lotharm Chlorosplenium mighg be difficult to delimit from Mollisia s.l., so with te VBs it can actually be one, despite the minute apos. A light brown (not dark) excipulum is possible in the genus.