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12-03-2026 19:44

Ostropoloid fungus on Hibiscus
Enrique Rubio Enrique Rubio

Hi to everybody.Can you give me any suggestions ab

17-03-2026 10:09

Lasiobelonium corticale ?
François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

17-03-2026 10:40

Geopora sumneriana
Martine Vandeplanque Martine Vandeplanque

Bonjour à tous.Chaque année en mars ou avril, il

05-03-2026 10:07

White apothecia on pine cone
Hulda Caroline Holte

Hello, I found and collected this species growing

12-03-2026 15:45

Dematioscypha cf. olivacea
Åge Oterhals

Dear forum,I found this small discomycete on a ver

12-03-2026 16:17

Mollisia atlantica
Sylvie Le Goff

Bonjour à tousRécolté dans le 22 en France (ré

11-03-2026 17:36

Help for Genus and Species ID
Michel Hairaud Michel Hairaud

Bonjour, Je cherche des indices  pour cette réc

14-03-2026 13:51

Phylloscypha sp
Thierry Blondelle Thierry Blondelle

Hi everybody Under Quercus ilex, i hesitate to na

08-03-2026 14:05

Helvella lacunosa
Thierry Blondelle Thierry Blondelle

Bonjour à tous,Sur 3 récoltes supposées de H. l

12-03-2026 14:37

Octospora
David Wasilewski

These small ascomycota (1-3 mm) ere observed growi

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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