Accès membres

Mot de passe perdu? S'inscrire

20-02-2026 18:47

Marc Detollenaere Marc Detollenaere

Hello Forum,On rotten wood of Fagus, I found some

07-02-2023 22:28

Ethan Crenson

Hello friends, On Sunday, in the southern part of

19-02-2026 17:49

Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

19-02-2026 13:50

Margot en Geert Vullings

We found this collection on deciduous wood on 7-2-

19-02-2026 12:01

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia (España), recole

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 :

« < 1 2 3 4 5 > »
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