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substrate and a new pyrenomycetes...
Björn Wergen,
21-04-2011 21:47
Hi,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
Björn Wergen,
21-04-2011 21:48
Re:substrate and a new pyrenomycetes...
micro
Björn Wergen,
22-04-2011 00:44
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
Re:substrate and a new pyrenomycetes...
What about the ostiole ? Is it like compressum ?
Alain
Alain
Alain GARDIENNET,
22-04-2011 01:36
Re:substrate and a new pyrenomycetes...
Could the substrate be Spiraea vanhoutei ?
Björn Wergen,
22-04-2011 11:49
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
I do not think that it is Spiraea (after watching photos on the net).
regards,
Kazuya
Luc Bailly,
22-04-2011 12:26
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.
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
Re:substrate and a new pyrenomycetes...
Hi Luc,
it was a river island, not a park ;) thanks
regards,
kazuya
it was a river island, not a park ;) thanks
regards,
kazuya
Björn Wergen,
26-04-2011 12:05
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
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?