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17-02-2026 09:41

Maren Kamke Maren Kamke

Good morning, I found a Diaporthe species on Samb

16-02-2026 21:25

Andreas Millinger Andreas Millinger

Good evening,failed to find an idea for this fungu

08-12-2025 17:37

Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

17-02-2026 17:26

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous, Je recherche cette publication :

03-02-2013 19:50

Nina Filippova

Good time), I've compared this specimen with the

15-02-2026 04:32

Tomaz Vucko Tomaz Vucko

One more specimen that is giving me some descent a

17-02-2026 13:41

Isabelle Charissou

Bonjour, est-ce que quelqu'un pourrait me fournir

16-02-2026 18:34

Thierry Blondelle Thierry Blondelle

Bonjour,La micro de cet anamorphe de Hercospora su

16-02-2026 17:14

Joanne Taylor

Last week we published the following paper where w

16-02-2026 16:53

Isabelle Charissou

Bonjour, quelqu'un pourrait-il me transmettre un

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Rhytismatales? on Carex
Marja Pennanen, 21-07-2016 12:55
Hello forum,

once again I'm not finding even a genus for my collection.

These brown ones are up to 1,5 mm wide.
The spores are about 10-20x2-3 and asci about 40-50x5, faintly IKI blue and paraphyses are up to 3 wide.
Dark cells exist and there is some kind of brown material reminding hairs on the surface.
I saw one, supposingly  representative of this species, that was closed black ball. So I was trying to find a genus from Rhytismatales, but must have missed the genus or am seeking from a wrong place.

Better suggestions?

Marja
  • message #43958
  • message #43958
  • message #43958
  • message #43958
Hans-Otto Baral, 21-07-2016 13:24
Hans-Otto Baral
Re : Rhytismatales? on Carex
Dear Marja
I think you have Dennisiodiscus prasinus. Are the asci 4-spored?
Zotto
Marja Pennanen, 21-07-2016 13:33
Re : Rhytismatales? on Carex
Dear Zotto,

Thak you for your fast answer.

I could not count the spores inside the asci, but was wondering, where there 4 or 8 spores, because the spores are big compared to the asci size.

I may try to check another later. Now I got to post some other specimens to Seppo, while they are still fresh...

Dennisiodiscus would be a new genus for me :D

Marja
Marja Pennanen, 21-07-2016 16:01
Re : Rhytismatales? on Carex
Checked another and the asci are 4-spored.

There seems to be another collection from Finland in Turku and if more have not been collected lately, this was the second finding of Dennisiodiscus prasinus here.

Once again, thank you Zotto.

Happy for this new genus for me: Marja