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13-09-2025 14:10

Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

13-09-2025 15:43

Edmond POINTE Edmond POINTE

Bonjour Christian,J'ai trouvé deux spores ressemb

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 23:53

Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

08-09-2025 19:07

ruiz Jose

Hola me pasan esta recolecta en madera de fraxinus

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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