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30-04-2016 01:38

Nick Aplin

Salut Ascofrance, I wonder if anyone has any idea

28-04-2016 22:22

Lothar Krieglsteiner Lothar Krieglsteiner

I found only one ascoma - on February, the 27th. F

29-04-2016 17:27

Enrique Rubio Enrique Rubio

Hi to everybody I'm looking for this paper Lundqv

27-04-2016 08:24

Dragiša Savic

I found it last year (april) on dead stem of Laser

16-04-2016 15:02

Luc Bailly Luc Bailly

Bonjour à tous, Hi all,Pour terminer un article,

25-04-2016 18:30

Chris Yeates Chris Yeates

Bonjour tousAesculus hippocastanum (certainly in t

26-04-2016 18:34

Dragiša Savic

I need a description of Pirottaea imbricata. Does

26-04-2016 21:59

Lepista Zacarias

Hi everyone,I saw this pyreno growing on an hera-l

26-04-2016 16:10

ACAR ismail ACAR ismail

hi allon soil in the stump of populus sp.ascospore

25-04-2016 09:18

Steve Clements

Bonjour, j'ai trouvé cet asco sur le bouleau –

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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