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25-02-2023 18:36

Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

01-06-2025 09:37

Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

06-07-2025 19:36

Castillo Joseba Castillo Joseba

me mandan el material de Galicia (España) recolec

07-07-2025 19:22

David Chapados David Chapados

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

02-07-2025 18:45

Elisabeth Stöckli

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

04-07-2025 20:12

Josep Torres Josep Torres

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

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

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Conidia on Fagus
Steffen Lorenz, 23-07-2017 18:32
Hello,

I found these conidia on Fagus sylvatica (a thick slice of the stem). They resemble Prosthecium pyriforme but this species is restricted to Acer.

The conidia are muriform, have a 1,5 µm thick hyaline sheath and measure 32-38 x 14-17 µm (without sheath).

Is it possible to determine the species?

Regards
Steffen
  • message #49760
  • message #49760
Hermann Voglmayr, 24-07-2017 15:15
Hermann Voglmayr
Re : Conidia on Fagus

Hi Steffen,


Concerning the bark features seen in your illustration the substrate clearly is not Fagus but Acer pseudoplatanus.


So you are right, the species is from the Stegonsporium pyriforme group, there are three cryptic species which can only be reliably identified by sequence data.


See Voglmayr, H., Jaklitsch, W. M., 2014. Stilbosporaceae resurrected: generic reclassification and speciation. Persoonia 33: 61-82, available for free download at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4312938/


Hermann

Steffen Lorenz, 24-07-2017 18:47
Re : Conidia on Fagus
Hello Hermann,

thank you for your answer. I think, you are right with the substrate.
Looking at the picture I was in doupt too, but I was too sure with Fagus. On top of that the conidia seemed a bit slender (width 17-20 µm according to Ellis & Ellis). But your and Mr. Jaklitsch's article confirm my measurements.

Are you interested in this collection for your studies?

Regards
Steffen
Hermann Voglmayr, 25-07-2017 11:07
Hermann Voglmayr
Re : Conidia on Fagus
Yes, can easily happen to be too sure about host identification.
Many thanks for your offer of the material - however, the Stegonsporium project is finished, so I don't need additional specimens.
Best wishes, Hermann