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07-08-2015 20:23

Andreas Gminder Andreas Gminder

Hello, another pyrenomycete with distinct charact

24-07-2015 11:05

Stefan Blaser

Hello Everybody, Can anybody help me identifying

07-08-2015 02:20

Esquivel-Rios Eduardo

Encontrado en vainas secas de Euterpe oleracea (Ar

06-08-2015 17:51

Marja Pennanen

Hello forum,these subsessile ones are about 0,1-0,

06-08-2015 07:45

Stephen Martin Stephen Martin

Hi, I had this image for identification since few

05-08-2015 22:12

Joaquin Martin

HiHyalorbilia found in branch of Quercus rubra.Spo

05-08-2015 18:10

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I would like to know your oppinion on this S

04-08-2015 20:38

Per Vetlesen

Substrate: Corylus avellanaAsci cylindric, 8-spore

05-08-2015 10:57

Blasco Rafael Blasco Rafael

Hola, tengo esta muestra recogida a 1400m sobre A.

04-08-2015 15:55

Steve Clements

Bonjour,On a trouvé un Cordyceps la semaine derni

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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