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20-05-2026 18:15

cf Godronia sp.
Moreno Miriam

Hello! I am working on my master's thesis on the d

20-05-2026 17:47

Mollisia on Juncus
Margot en Geert Vullings

We found this Mollisia on dead Juncus stems mown l

20-05-2026 12:57

unknown semi-aquatic objects
Ingo Ibelshäuser Ingo Ibelshäuser

Hello everybody, on decayed hardwood e.g. Quercus

22-04-2026 20:54

Pyrenopeziza on monocot.
Enrique Rubio Enrique Rubio

Hi to everybody.This Pyrenopeziza grew in moist le

17-05-2026 22:09

Mollisia sp
éric ROMERO éric ROMERO

Bonjour tous, Je sollicite vos avis pour ce Molli

19-05-2026 19:47

Xylariaceae?
Andreas Millinger Andreas Millinger

Hello dear community,found this species the second

19-05-2026 12:55

Mollisia sps? with minute spores 2.7 -3.5µm.
Hardware Tony Hardware Tony

After checking Gminder and Otto's library I cannot

19-05-2026 10:27

Peziza phlebospora ?
Patrice TANCHAUD

Bonjour, récolte récente sur terre retournée i

18-05-2026 12:43

Hymenoscyphus fraxineus
Sylvie Le Goff

Bonjour à tousPuis je avoir votre aide sur ce que

19-05-2026 14:56

Unknown cushion-formed with clavate margin hairs
Åge Oterhals

I found this white cushion-formed ascomycete on ro

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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