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09-05-2023 06:06

Marc Detollenaere Marc Detollenaere

On Vaccinium myrtillus I found some brown setose f

09-05-2023 15:12

Jan Knuiman

This Peziza was found on a dead tree (Fraxinus or

07-05-2023 21:24

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et à tous,Apparemment, je ne tr

08-05-2023 17:25

Marc Detollenaere Marc Detollenaere

On dead twigs of Salix aurita I found some hairy d

08-05-2023 10:48

Manta Park

Dear FriendsI'm searching for the followig paper:D

05-05-2023 22:16

Dirk Gerstner

Hello all, This Mollisia gives me no peace.I had

06-05-2023 15:45

Riet van Oosten Riet van Oosten

Hello, found by Ruud van Middelkoop, April 2023, t

05-05-2023 13:14

Laurent Bonneau Laurent Bonneau

Bonjour, j'ai observé ce matin de petits asco s

03-05-2023 19:38

Ursula Kozik

Bonjour et bonne journée, à la recherche d'une

05-05-2023 10:31

Marc Detollenaere Marc Detollenaere

Hello Forum,Yesterday I found some small white dis

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Pyreno with interesting spores on ?Rubus
Juuso Äikäs, 25-04-2023 15:56
These little black pyrenos were growing yesterday on a herbaceious stem (possibly Rubus idaeus).

The spores are asymmetrically 2-celled, have a setula at both ends and measure 8.2 - 10.3 × 2.7 - 2.9 µm. The asci are IKI negative and measure 37 - 41 × 6.5 - 7.5 µm.

Maybe someone knows what this is?
  • message #75941
  • message #75941
Lothar Krieglsteiner, 25-04-2023 16:01
Lothar Krieglsteiner
Re : Pyreno with interesting spores on ?Rubus
Hello Juuso,
although your spore measures are a bit small: perhaps compare with Gnomonia rubi.
Yours, Lothar
Enrique Rubio, 25-04-2023 16:35
Enrique Rubio
Re : Pyreno with interesting spores on ?Rubus
Maybe Anisogramma vepris.
Juuso Äikäs, 25-04-2023 17:14
Re : Pyreno with interesting spores on ?Rubus
Thank you Lothar and Enrique for the suggestions! 

I checked those species and it seems Anisogramma vepris is a good fit. There are some Finnish findings of it under the name Cryptodiaporthe vepris, all on Rubus. Apparently this one has quite a bunch of synonyms, but Anisogramma vepris is the current name.
Enrique Rubio, 25-04-2023 17:21
Enrique Rubio
Re : Pyreno with interesting spores on ?Rubus
The spore appendages are often not as visible as in your photos.
Regards.
Juuso Äikäs, 25-04-2023 17:53
Re : Pyreno with interesting spores on ?Rubus
Yeah, in many pics I found they weren't at all visible. The description in fungi.myspecies.info seems to fit though: "often with a short bristle-like mucous appendage to ca 5 µm in length at each end (visible in water mounts)". Maybe the "setula" term I used isn't entirely fitting.
Enrique Rubio, 25-04-2023 18:00
Enrique Rubio
Re : Pyreno with interesting spores on ?Rubus
https://www.centrodeestudiosmicologicosasturianos.org/?p=28214
In this collection that I studied, I could not see them even though I looked for them persistently.