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12-01-2026 22:02

Ethan Crenson

Hello all, I am hoping someone will have some ins

11-01-2026 20:35

Josep Torres Josep Torres

Hello.A very tiny pyrenomycete sprouting sparsely

12-01-2026 05:24

Danny Newman Danny Newman

Cyathicula coronata on Urtica dioicaCataloochee Di

15-12-2025 11:49

Danny Newman Danny Newman

ITS sequences from the following two collections B

09-01-2026 17:41

Arnold Büschlen

Hallo, F. dilatata wird von vielen Bryoparasiten

10-01-2026 20:00

Tom Schrier

Hi all,We found picnidia on Protoparmeliopsis mur

07-01-2026 22:22

Danny Newman Danny Newman

Tatraea sp. on indet. hardwood The Swag, Great Sm

10-01-2026 01:18

Danny Newman Danny Newman

cf. Neovaginatispora fuckelii on indet. shrub Pre

07-01-2026 10:24

Danny Newman Danny Newman

Pezicula sp. on indet. hardwood Appalachian Highl

09-01-2026 10:08

Blasco Rafael Blasco Rafael

Hola, en el mismo habitat que la anteriorRetamaDia

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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
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  • 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