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27-04-2026 12:54

Steve Clements

Bonjour. Ce petit champignon blanc résupiné et

27-04-2026 09:59

Pauline. Penna

Bonjour Can anyone advise me on these pycnidia fo

26-04-2026 21:08

William Slosse William Slosse

Several species of Ramularia occur on Rumex that I

22-04-2026 20:54

Enrique Rubio Enrique Rubio

Hi to everybody.This Pyrenopeziza grew in moist le

25-04-2026 11:34

Louis DENY

Bonjour forumdans la clé de Zotto, L. pudicellum

24-04-2026 03:16

David Chapados David Chapados

Found while looking at something else from wood in

22-04-2026 01:06

Richard VALERI Richard VALERI

Bonjour à tous.Je vous présente cette Nectria s.

22-04-2026 20:17

Marian Jagers Marian Jagers

Is anyone familiar with the Hyphomycetes genus Pse

23-04-2026 06:46

François Freléchoux François Freléchoux

Bonjour, Voici la description d'un minuscule asco

21-04-2026 22:14

Margot en Geert Vullings

This cup fungus was found on April 10, 2026, on lo

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Diaporthoid fungus - need help in identification
Ivana Kusan, 30-05-2012 16:03
Dear Pyreno-friends,

Does anyone have an idea what this fungus might be? Substrate is decorticated trunk of Fagus sylvatica in a forest of Abies alba, Fagus sylvatica, Acer pseudoplatanus and Picea abies. Living ascospores measure 11,7-16,5/6,3-7,1 microns. Spores rapidly die in IKI and are 4,5-6,0 microns wide. Visibility of the apical ring was only enhanced by IKI in water but seemingly with only grey shade and without blue colouration. We consulted Munk (1957), RWG Dennis (1980) and Wehmeyer (1933).


Nice regards to all,


Ivana


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Alex Akulov, 30-05-2012 17:01
Alex Akulov
Re : Diaporthoid fungus - need help in identification

Dear Ivana


I think, you have Eutypa flavovirens with associated fungicolous fungus Didymosphaeria conoidea


Alex

Alex Akulov, 30-05-2012 17:02
Alex Akulov
Re : Diaporthoid fungus - need help in identification
Description
Ivana Kusan, 30-05-2012 17:15
Re : Diaporthoid fungus - need help in identification
Dear Alex,

:-))) Thank you for your help! When we cut stroma with perithecia we thought it is Eutypa flavovirens because of the green colour. But, we didn't see any Eutypa spores! Only this Didymosphaeria.... It's obvoius now why we couldn't find anything with these characters in the literature.
 
Best regards,

Ivana
Björn Wergen, 03-06-2012 12:39
Björn Wergen
Re : Diaporthoid fungus - need help in identification
I do not think this one is Didymosphaeria conoidea. The species grows on or in old Leptosphaeria (doliolum) fruitbodies and has smaller, brown ascospores. I have found it once (see attached photo).

regards,
björn
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Ivana Kusan, 04-06-2012 20:53
Re : Diaporthoid fungus - need help in identification
Hi Björn,

Thanks for your kind reply. All spores were hyaline and smooth. ?Also quite larger than in description attached by Alex.

Ivana