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19-03-2021 14:49

Mirek Gryc

Hello everyone.I am studying this species for the

19-03-2021 12:12

Stefan Blaser

Hello everybody, With this collection I ended up

27-12-2019 16:58

Michel RIMBAUD

Hello forum,Does somebody could send me a key for

18-03-2021 00:33

Yannick Mourgues Yannick Mourgues

Trouvés sur Corylus. Asques IKI-, bituniqués.

18-03-2021 13:58

UZUN Yasin UZUN Yasin

Hi to all. Could someone please send me these lite

19-03-2021 08:09

Stefan Blaser

Hello everybody, I need some Input on this one:

14-03-2021 17:46

William de Jong

Hi,Today I found a very small asco a dead leave of

01-03-2021 18:33

Blasco Rafael Blasco Rafael

Hola, He encontrado estas muestras sobre Juglans

18-03-2021 08:05

Garcia Susana

Hola, Estoy muy despistada con este ascomiceto. N

17-03-2021 18:40

Juuso Äikäs

Here's a finding from yesterday. The substrate is

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Cosmospora spec. from Norway
Lothar Krieglsteiner, 18-08-2025 16:01
Lothar Krieglsteiner.. on water-soaked Betula wood lying in a small stream. The minute perithecia remind me of specimens I determined as "Nectria" viridescens or as N. rishbethii in earlier times. I know a lot has changed since. When I compare Cosmospora viridescens I find the spores of my specimen to be quite large. Who can say more?
For sure this is a Nectriaceae, because the perithecial wall stains deeply magenta-violaceous in KOH. I think Cosmospora could be the right genus (?).
The spores are brownish at maturity and are slightly warted-rough, they meaure about 13-15/6-7 µm.
Best regards, Lothar
  • message #83302
  • message #83302
Andgelo Mombert, 18-08-2025 20:25
Andgelo Mombert
Re : Cosmospora spec. from Norway
Hello Lothar,

Currently, it is not possible to identify a aquatic nectriaceous fungi without culture of asexual state (Fusarium-like or Acremonium-like ?) and molecular data.
Several genera are possible: Cosmospora, Cosmosporella, Dialonectria, etc.

Andgelo
Lothar Krieglsteiner, 19-08-2025 08:50
Lothar Krieglsteiner
Re : Cosmospora spec. from Norway
Hello Angelo,
thank you!
Sounds quite unsatisfactory ...
Yours, Lothar