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21-05-2024 11:33

Nihad Omerovic

Hello,found on dead, dry, attached (and fallen) tw

21-05-2024 11:13

Ursula Kozik

Hallo und guten Tag, habe eine Frage zur Farbe ei

21-05-2024 09:15

Pierre Repellin

Bonjour à tous,L'ouvrage de Björn Wergen: Handbo

17-05-2024 16:25

Pavel Jiracek

Erioscyphella lunata, found on a fallen needle of

20-05-2024 21:28

Nihad Omerovic

Hello,Found this Orbilia on a dry, attached twig o

07-11-2018 08:34

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, could someone send this publication to me

18-05-2024 10:47

Anna Klos

Goodmorning,We found this tiny ascomycete (max. 1m

25-03-2024 19:14

Juuso Äikäs

I found some small black pyrenos growing on a dead

14-04-2024 20:04

Manak Roman

Hi all,I have two very similar finding last weeken

10-05-2024 17:40

Anna Klos

Good afternoon, Thursday during an inventory we f

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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