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24-04-2026 03:16

David Chapados David Chapados

Found while looking at something else from wood in

22-04-2026 20:54

Enrique Rubio Enrique Rubio

Hi to everybody.This Pyrenopeziza grew in moist le

22-04-2026 01:06

Richard VALERI Richard VALERI

Bonjour à tous.Je vous présente cette Nectria s.

22-04-2026 20:17

Marian Jagers Marian Jagers

Is anyone familiar with the Hyphomycetes genus Pse

23-04-2026 06:46

François Freléchoux François Freléchoux

Bonjour, Voici la description d'un minuscule asco

21-04-2026 22:14

Margot en Geert Vullings

This cup fungus was found on April 10, 2026, on lo

22-04-2026 19:12

Louis DENY

Bonjour forum.Trouvé à Belfort, est de la France

21-04-2026 21:00

Sylvie Le Goff

Bonjour à tousJe sollicite votre aide pour cet as

21-04-2026 13:36

Gernot Friebes

Hi,I am out of ideas for this one. I collected Sal

21-04-2026 13:19

Gernot Friebes

Hi,this Lophodermium on Typha has ascospores measu

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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.