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12-03-2026 16:17

Sylvie Le Goff

Bonjour à tousRécolté dans le 22 en France (ré

05-03-2026 10:07

Hulda Caroline Holte

Hello, I found and collected this species growing

14-03-2026 13:51

Thierry Blondelle Thierry Blondelle

Hi everybody Under Quercus ilex, i hesitate to na

12-03-2026 19:44

Enrique Rubio Enrique Rubio

Hi to everybody.Can you give me any suggestions ab

11-03-2026 17:36

Michel Hairaud Michel Hairaud

Bonjour, Je cherche des indices  pour cette réc

12-03-2026 15:45

Åge Oterhals

Dear forum,I found this small discomycete on a ver

08-03-2026 14:05

Thierry Blondelle Thierry Blondelle

Bonjour à tous,Sur 3 récoltes supposées de H. l

12-03-2026 14:37

David Wasilewski

These small ascomycota (1-3 mm) ere observed growi

11-03-2026 16:48

Bruno Coué Bruno Coué

Bonjour, je serais heureux d'avoir votre avis sur

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

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substrate and a new pyrenomycetes...
Björn Wergen, 21-04-2011 21:47
Björn WergenHi,

today I have examined my collections from a river island where also the Phaeosphaeria punctillum (see the other thread) was found. At first, I am not really sure about the substrate, I think it can be Symphoricarpos sp.

The small pseudothecia grow under the cortex and are 0,1-0,2 mm, black and sphaerical.
The spores are 21-27x7-9µm, at first with 3 septa, then with 5-7, 4. or 5. segmentation swollen and sometimes with a longitudinal septation!!, with a distinct constriction only at primary septa, without a sheath, smooth or perhaps pointed, straw coloured to brown. Asci 8spored, short stalked. Pseudoparaphyses not seen.

Perhaps someone can help me with this, especially with the substrate;))

regards,
Kazuya
  • message #15125
Björn Wergen, 21-04-2011 21:48
Björn Wergen
Re:substrate and a new pyrenomycetes...
micro
  • message #15126
Björn Wergen, 22-04-2011 00:44
Björn Wergen
Re:substrate and a new pyrenomycetes...
I would say it has something to do with Lophiostoma compressum...I will add macro photos later ;)
Alain GARDIENNET, 22-04-2011 01:35
Alain GARDIENNET
Re:substrate and a new pyrenomycetes...
What about the ostiole ? Is it like compressum ?
Alain
Alain GARDIENNET, 22-04-2011 01:36
Alain GARDIENNET
Re:substrate and a new pyrenomycetes...
Could the substrate be Spiraea vanhoutei ?
Björn Wergen, 22-04-2011 11:49
Björn Wergen
Re:substrate and a new pyrenomycetes...
So here is the macroscopical view of the pseudothecia. They are 0,1-0,2 mm and have no compressed ostioli, they lie between cortex and wood and erupt the cortex verrucously.

I do not think that it is Spiraea (after watching photos on the net).

regards,
Kazuya
  • message #15130
Luc Bailly, 22-04-2011 12:26
Luc Bailly
Re:substrate and a new pyrenomycetes...
With the shape of the leaves, I'll go for Symphoricarpos, indeed. Family Caprifoliaceae to be complete.
Was it near a park, or did the plant escaped from a park? (this can happen)

Spiraea would have narrower leaves AFAIK.
Björn Wergen, 25-04-2011 09:44
Björn Wergen
Re:substrate and a new pyrenomycetes...
Hi Luc,

it was a river island, not a park ;) thanks

regards,
kazuya
Björn Wergen, 26-04-2011 12:05
Björn Wergen
Re:substrate and a new pyrenomycetes...
what about Dothiora sphaeroides or Dothiora schizospora? The last one was described on Symphoricarpos orbiculatus in America (see http://www.jstor.org/stable/3756251?seq=2).

regards,
Kazuya
Lily Barnes, 26-04-2012 10:56
Re : substrate and a new pyrenomycetes...
Is that to be found everywhere in America? I have had some tropical plants delivered and I am now wondering if I could find some pyrenomycetes in there?