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28-10-2025 15:37

Bright orange stalked asco
Carl Farmer

I'd be grateful for any suggestions for this strik

28-10-2025 11:29

Asco on Quercus-leaves
Tanja Böhning Tanja Böhning

Hello, I found this very small (ca 0,5mm) yellow

27-10-2025 00:34

Strange asco on Quercus acorn
Francois Guay Francois Guay

I found this strange species in Québec,Canada, gr

27-10-2025 15:29

A new find for a Calycina on Rubus
Michel Hairaud Michel Hairaud

Bonjour à tous, Avec Elisabeth Stöckli nous avo

26-09-2025 15:51

Sordariales sp
Jean-Luc Ranger

Bonjour, voici un ascome poussant sur crotte de la

27-10-2025 19:51

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Peter Welt Peter Welt

Who has this article? Doveri, F. 2007. Sporormiel

26-10-2025 13:39

Unknown ascomycete.
Joaquin Martin

Hi,I found this fungus in a mixed forest of spruce

27-10-2025 10:05

Pulvinula sp.
Tripodi Mario

Hello everyone,on October 25th, 2025 I found this

26-10-2025 21:23

Pale Hymenoscyphus on leaf
Juuso Äikäs

Hello, a couple weeks ago I found some pale, whit

26-10-2025 12:01

Blanc en troupe sérrée
Louis DENY

Hello forum,Trouvé à Belfort (400m) sur tige her

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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