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25-02-2023 18:36

Nectria
Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

05-07-2025 12:38

Pyrenomycetous fungi on dead Juniperus twig
Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

01-06-2025 09:37

Octospora
Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

06-07-2025 19:36

Auda con esta
Castillo Joseba Castillo Joseba

me mandan el material de Galicia (España) recolec

07-07-2025 19:22

Ascomycota
David Chapados David Chapados

Hi,Does anyone know what could this anamorph be?ht

02-07-2025 18:45

Sur Osmunda regalis
Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

04-07-2025 20:12

Black thready anamorph
Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Ascomycete on a herbaceous stem.
Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Salvia leaf parasite
Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

En tallo de herbaceas 1102
Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

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Cryptodiaporthe / Plagiostoma ? on Tilia(?)
Stefan Blaser, 28-02-2021 20:18
Hello everybody,

I am not getting on with the following collection:

Substrate: From wood anatomy I get to Tilia, but then, I am not very experienced in wood anatomy...

Macro: Perithecia immersed in bark in groups of 2-8, black, globose, with a diameter of 0.4-0.7 mm, with a long ostiolar neck that is slightly laterally compressed and reaches 0.4 mm in length. No black delimiting zones in wood/bark.

Micro: Asci 60-75 x 8-9 µm, apical ring strongly red in Congo. Paraphyses not seen. Spores two-celled, 18-20 x 3-3.5 µm, hyaline and with a hyaline, pointed appendix of 3-4 µm in lenght on each end.

Maybe I get the substrate wrong which might explain the identification difficulties.

Anyway, I would be very grateful for any hints.

Stefan
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Enrique Rubio, 28-02-2021 20:28
Enrique Rubio
Re : Cryptodiaporthe / Plagiostoma ? on Tilia(?)
Hi Stefan
I am far from being an expert in wood anatomy, but I think yours is not Tilia, whose bark has a typical reticulate structure. And in this type of fungi, knowing the host is very important.
Good luck!
Enrique
  • message #67696
Stefan Blaser, 28-02-2021 20:36
Re : Cryptodiaporthe / Plagiostoma ? on Tilia(?)
Dear Enrique, Thanks! Yes I know this. However I keep getting to Tilia. Next best hit until now would be Acer (campestre). But you are right, I should keep working on the correct host!

Best,

Stefan
Stefan Blaser, 01-03-2021 20:02
Re : Cryptodiaporthe / Plagiostoma ? on Tilia(?)
Hi everybody,

Maybe I was a bit lazy first...

After some more work I pinned down the substrate to Acer spec. and ended at

Apiognomonia hystrix (Tode) Sogonov

which fits nicely.

Best wishes,

Stefan