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14-01-2025 18:17

Ascomycète 1ère fois. Hymenoscyphus sp.
Martine Vandeplanque Martine Vandeplanque

Bonsoir à tous. Grande première rencontre avec

13-01-2025 20:17

Pezizal blanc poilu tétrasporique
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Buenas tardes, adjunto datos de éste pequeño pez

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disc on Cryptomeria needles
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On a dead branch of Cryptomeria that has been lyin

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Didymella applanata? Small black spots on perennial stem of blackberry
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We found this small black spots on perennial stem

10-01-2025 18:19

Nectria-like on Daldinia
Marc Detollenaere Marc Detollenaere

Dear Forum,I found some colonies of orange coloure

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Sur citrouille
michel bertrand

Bonjour, Après moultes recherches plutôt infruc

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Durella connivens
Thomas Flammer

Spores cylindrical-fusiform, 7 times septated, IKI

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Helvella lacunosa ?
Jean-Luc Ranger

Bonjour, je me demande si cette Helvelle ne serait

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Bryoscyphus or Roseodiscus 040125 660
Miguel Ãngel Ribes Miguel Ángel Ribes

Good afternoon This small pink ascomycete, 2 mm i

10-01-2025 03:04

Literature request
Masanori Kutsuna

Hello, Does anyone have following article and cou

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Discomycete from Spirea branches
Alex Akulov, 12-07-2011 19:30
Alex Akulov

Good day


I try to make microphotos for some Discomycetes samples, which looks interesting for me. May be you have some ideas about them.


Alex

  • message #15817
  • message #15817
Hans-Otto Baral, 12-07-2011 20:19
Hans-Otto Baral
Re : Discomycete from Spirea branches
Thoug I do not know the species very well, I think this could be Godronia spiraeae

Zotto
Alex Akulov, 12-07-2011 21:21
Alex Akulov
Re : Discomycete from Spirea branches

Dear Zotto


Thank you!


According Seaver description spores of Godronia spiraeae are 25-35 x 3-4, but in my sample - up to 70 x 1,1. Therefore, I think it is something another.


Alex

  • message #15821
Alex Akulov, 12-07-2011 21:34
Alex Akulov
Re : Discomycete from Spirea branches
Zotto, do you familiar with the article:
Growes J.W. The genus Godronia // Canadian Journal of Botany, 1965, 43:(10) 1195-1276? I have not access to this article. Possible there are more information about Godronia spiraeae there.

Alex

Guy Garcia, 12-07-2011 22:05
Re : Discomycete from Spirea branches
avec de grandes spores voir peut-être Godronia cassandrae f. spiraeicola (Henn.) Groves
Alex Akulov, 12-07-2011 22:24
Alex Akulov
Re : Discomycete from Spirea branches

Thank you, Guy.


I can not to verify your idea , because I have not Groves original article from Canadian Journal of Botany:-( But according Mycobank, basionim of Godronia cassandrae f. spiraeicola (Henn.) Groves is Cenangella spiraeicola Henn. In the original description of Cenangella spiraeicola in Hennings paper spores are even smaller - 10-13 x 1,5-2.


May be you have another information?


Alex

  • message #15824
Stip Helleman, 13-07-2011 08:27
Stip Helleman
Re : Discomycete from Spirea branches
Hi Alex,
this sporesize fits good for the imperfect, Groves gives no indication for the sporesize of this forma so i assume it will be the same as cassandrae only differing in substrate.
i will send photos.
cheers Stip
Alex Akulov, 13-07-2011 09:37
Alex Akulov
Re : Discomycete from Spirea branches
Thank you very much for advise and sent Groves article!
My specimens really looking like Godronia cassandrae f. spiraeicola (Henn.) Groves. But there are some confusions because visual similarity of macroconidia and ascospores.

Alex

  • message #15827
  • message #15827
  • message #15827
Hans-Otto Baral, 13-07-2011 11:08
Hans-Otto Baral
Re : Discomycete from Spirea branches
Yes, that sounds better. But the spore  size of G. cassandrae differs with 40-85 x 1.5-3.5 µm (Groves 1965) from yours in the width. How sure are you with that?

For spiraeae Groves says 20-45 x 2.5-4 µm, which is also much wider than you say.

Zotto
Alex Akulov, 13-07-2011 12:19
Alex Akulov
Re : Discomycete from Spirea branches
In my sample most of asci are immature. I've been doing a lot of preparates in order to see at least one spore. And even those individual spores that I could find were not formed. Perhaps that is why their size does not quite equal to the description of Groves.
I plan to be in the same locations in the Carpathian mountains in 2 weeks and try to find a more mature specimens.

Alex