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23-07-2017 18:32

Conidia on Fagus
Steffen Lorenz

Hello,I found these conidia on Fagus sylvatica (a

24-07-2017 12:03

Para identificar
Castillo Joseba Castillo Joseba

Pensamos en Leotia y tambien en Coudoniella,   pe

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Arthrinium
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Hymenoscyphus foliicole
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Bonsoir à tous,Un Hymenoscyphus sur feuilles de P

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Literature search Booth 1967
Spooren Marco Spooren Marco

Hello,Does someone has : Booth, C. 1967 Pleospora

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Incrucipulum ciliare ?
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I have seen one or two examples of paraphyses bein

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Peziza-Lathraea
Luis Ballester Luis Ballester

Hola a todosWe have found this Peziza growing cesp

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Scutellinia 934
Castillo Joseba Castillo Joseba

En madera no identificada,   posiblemente  Fagus

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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