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10-06-2026 21:16

Ascomycète stipité sp. sur Filipendula ulmaria
François Freléchoux François Freléchoux

Bonsoir,Le dernier du jour, en attendant votre avi

11-06-2026 16:24

Orbilia
Ethan Crenson

Hi all, Recently, a friend found this Orbilia in

11-06-2026 19:01

Spinellus-like fungus on Scathophaga stercoraria
William Slosse William Slosse

Hello all,In an attempt to make a culture of a sus

11-06-2026 19:03

IMPORTANT >> MAINTENANCE 15-06
Nicolas VAN VOOREN Nicolas VAN VOOREN

Chers membres d'Ascofrance,Le site sera placé en

10-06-2026 23:08

Mollisia nervicola ?
éric ROMERO éric ROMERO

Bonjour tous, Je vous propose un Mollisia trouvé

09-06-2026 18:32

Vibrisseaceae(?) sur phragmites
Camille Mertens

Sur morceau de roseau immergé 0,5 - 0,7 mm de dia

10-06-2026 12:54

A dematiaceous hyphomycete on Filipendula
Steve Clements

Bonjour encore, Pouvez-vous m'aider, s'il vous pl

10-06-2026 21:07

Pyrénomycète ? sur Gentiana lutea
François Freléchoux François Freléchoux

Toutes les tiges de gentianes jaunes de l'an passÃ

10-06-2026 13:41

Ascomycète sp. sur Gentiana lutea
François Freléchoux François Freléchoux

Bonjour à nouveau, Voici une trouvaille d'hier.

10-06-2026 11:53

Lachnum nudipes on Meadowsweet
Steve Clements

Bonjour, This disco is abundant on dead stems of

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Diaporthe on Salix branch
Björn Wergen, 04-04-2012 14:26
Björn WergenChère collegues,

I have found this small Diaporthe species on dead attached Salix twix with single growing perithecia, embedded in the bark and with 0,1-0,3 mm diam. Microscopically I think it should be a member of the genus Diaporthe, but I am not sure what it is exactly (D. rudis for example has similar spore size and shape, but grows on other substrates). 

It has also similarities with D. alnea, described in Breitenbach&Kränzlin, Vol 1, which seems to have Alnus on the top of its priority list. 

Perhaps you have an idea ;)

I have probably seen very inconspicuous appendixes on both endings.

regards,
björn
  • message #18083
  • message #18083
Alain GARDIENNET, 04-04-2012 17:49
Alain GARDIENNET
Re : Diaporthe on Salix branch
I think it could be Diaporthe eres, as thought by Wehmeyer (I call it for myself "eres complex").
Alain
Björn Wergen, 04-04-2012 21:21
Björn Wergen
Re : Diaporthe on Salix branch
Thanks Alain for your opinion. I also thought about eres, but this finding was completely another one than I had on Ulmus last year.

regards,
björn
Alain GARDIENNET, 05-04-2012 07:52
Alain GARDIENNET
Re : Diaporthe on Salix branch
Perhaps another idea. You haven't given several informations about macroscopy and I ask me if it could be other genus. Have you looked in Plagiostoma (Meijia, SIM68, 2011) ? 
But I always think it could D. eres. 
Alain
Björn Wergen, 05-04-2012 09:18
Björn Wergen
Re : Diaporthe on Salix branch
Yes I did, but except P. salicellum with different spore size and P. exstocollum with different substrate there is no species which fits well to my finding. I think D. eres should be right, I have compared it with my finding from 2011 and spores are nearly the same, but macroscopic appearance is so variable.

thanks again Alain

regards,
björn