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01-06-2025 09:37

Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

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

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Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

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Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

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Francois Guay Francois Guay

I found this interesting yellowish asco growing on

01-07-2025 23:37

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BonjourRécolté sur une brindille au fond d'un fo

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Calosphaeria pulchella?
Andreas Gminder, 07-08-2015 20:23
Andreas Gminder

Hello,


another pyrenomycete with distinct characters, but as I'm not familiar with pyrenomycetes I'm not too certain about the determination.


Macroscopically this is very similar to the drawing in DENNIS for Calosphaeria pulchella. However there are some differences:


- ecologically the species should be immersed in the substrate and only the long necks are to see. In my collection the whole fruitbodies were superfically "lying" on bark. It might be, that one layer of the bark split of not long before I found the perithecia, but nevertheless they were not immersed in wood.


- the necks of the perithecia are covered by a tomentum of orange hairs! See the fotos. I have not found that feature reported or drawn in the literature.


- the spores are slightly bigger than in DENNIS: 6-7,5 (8) x 2-2,2 (2,5) µm, but that may be due to my measurements being from living spores.


What is your opinion on this collection?


thank you and best regards,
Andreas

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Gernot Friebes, 07-08-2015 21:08
Re : Calosphaeria pulchella?
Hi Andreas,

looks like Barbatosphaeria barbirostris. The ascospores should be 1-septate and it looks like they are in your photo.

Here's some literature:

http://www.mycologia.org/content/99/5/723.full.pdf
http://www.researchgate.net/publication/273261066_Molecular_systematics_of_Barbatosphaeria_(Sordariomycetes)_multigene_phylogeny_and_secondary_ITS_structure

Best wishes,
Gernot
Andreas Gminder, 07-08-2015 21:26
Andreas Gminder
Re : Calosphaeria pulchella?

Hallo Gernot,


 


mal wieder tausend Dank für die Hilfe - den hätte ich nie gefunden ....
Die Sporen waren in der Tat bisweilen septiert, aber ich hatte nicht den Eindruck dass sie dies bereits im Ascus gewesen wären.


beste Grüße,
Andreas