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08-12-2025 18:59

aff. Tricharina?
Lothar Krieglsteiner Lothar Krieglsteiner

.. found by a seminar-participant, I do not know t

07-12-2025 17:43

Helvella
Malcolm Greaves Malcolm Greaves

This Helvella was in mixed woodland. Uniform cupul

08-12-2025 17:37

possibly related to Melanomma - on Abies
Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

07-12-2025 16:07

Ascomycet mit Sammelfruchtkörper.
Arnold Büschlen

Hallo, ich habe in einer Moos-Aufsammlung (epiohy

16-03-2014 22:00

Unknown species on cones
Ralph Vandiest Ralph Vandiest

Hello,I found this species a few months ago but ha

08-12-2025 13:39

Hypocrealean parasite on Nemania serpens stroma - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10572899

07-12-2025 22:43

Leucostoma ?
Andreas Millinger Andreas Millinger

Good evening, tried to determine with Munks Valsa

05-12-2025 17:33

Lachnum sur feuille de chêne
Bruno Coué Bruno Coué

Bonjour, je serais heureux de recueillir votre avi

06-12-2025 00:19

Literature search (Raitviir Galán)
Viktorie Halasu Viktorie Halasu

Hello, would anyone have this article, please? An

04-12-2025 23:53

Anthracobia key
Malcolm Greaves Malcolm Greaves

Is there an up to date Anthracobia key available?T

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Didymella applanata? Small black spots on perennial stem of blackberry
Wim de Groot, 10-01-2025 11:24
We found this small black spots on perennial stem of blackberry with an interesting microscopy. I would be very thankfull for suggestions which species we have here. What strikes me is the green-coloured ascus (in water). Or is this an artifact? Maybe Didymella applanata? In pictures of that species I see small asci whereas my specimen has very wide asci.
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Björn Wergen, 12-01-2025 16:17
Björn Wergen
Re : Didymella applanata? Small black spots on perennial stem of blackberry
Hi,
this should be compared with Ploettnera exigua. The greenish parts of the fruitbody are typical, you can alos check in IKI, ascus porus should react red. 

regards
björn
Wim de Groot, 12-01-2025 16:56
Re : Didymella applanata? Small black spots on perennial stem of blackberry
Hi Björn,

I cannot find information of this species on this forum or by a google search. Do you have a link to Ploettnera exigua?

Regards, Wim de Groot
Viktorie Halasu, 14-01-2025 01:51
Viktorie Halasu
Re : Didymella applanata? Small black spots on perennial stem of blackberry
Hello,
try here: https://ascomycete.org/Portals/0/Archives/AscomyceteOrg%2003-01%2019-23.pdf or on Zotto's googledisk.
Viktorie