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30-03-2026 12:03

William Slosse William Slosse

Hello all,On 27/03/26, in Kraaiveld in Wingene (Be

30-03-2026 12:18

Sylvie Le Goff

BonjourRécolté sur la base de Pteridium aquilinu

25-03-2026 10:35

Hulda Caroline Holte

Hello,I collected this species growing on a dead b

28-03-2026 17:41

Louis DENY

Bonjour forum,Mollisia trouvée sur tige de Molini

30-03-2026 09:53

Yanick BOULANGER

BonjourVoici des petites fructifications poilues s

27-03-2026 10:47

Ã…ge Oterhals

I have tentatively identified this Stictis to S. f

28-03-2026 07:55

Marc Detollenaere Marc Detollenaere

Hello everybody,Yesterday I found a number of whit

26-03-2026 15:31

Ã…ke Widgren Ã…ke Widgren

Hello,I found this one in October last year, on r

27-03-2026 15:23

Gernot Friebes

Hi,this Trichopezizella deviates from typical T. b

27-03-2026 15:08

Gernot Friebes

Hi,I'm looking for help with this coelomycete on C

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Unknown pyreno on wood
Maren Kamke, 19-03-2014 19:51
Maren KamkeHi everybody,
I need your help again.
I continue to find this species on decidious wood and old, thick rubus stems. It is very small with a size of 0,2 mm, becoming superficial, gregarious. Spores hyaline without septa, but I'm not sure if they become 3-septate with age, (19-23) 21,33 x 4,25 (4-5) µm. Asci 85-101x6-8 µm, IKl negative, biseriat with croziers.
Thanks
Maren
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Enrique Rubio, 19-03-2014 19:56
Enrique Rubio
Re : Unknown pyreno on wood

Hi Maren


I feel your fungus is close to Paradidymella clarkii

Gernot Friebes, 19-03-2014 20:04
Re : Unknown pyreno on wood
Hi Maren,

maybe a Chaetosphaeria?

Best wishes,
Gernot
Björn Wergen, 20-03-2014 12:17
Björn Wergen
Re : Unknown pyreno on wood
Hi Maren,

Gernot is right, this is maybe Chaetosphaeria. Compare it with C. cupulifera, which I have already found on different hosts, like Clematis.

Do the spores have a septation when getting older?

regards,
björn
Maren Kamke, 20-03-2014 20:29
Maren Kamke
Re : Unknown pyreno on wood
Yes, I think it is a Chaetosphaeria. Thank you for your comments.

Meanwhile the spores became 1-septate. I'll be watching the development. C. cupulifera fits the description of Ellis quite well. The conidial stage I can not comment. In addition to the key in Ellis I have only found the key of Réblova. Is there anything else?
Regards,
Maren

Björn Wergen, 21-03-2014 16:32
Björn Wergen
Re : Unknown pyreno on wood
Hi Maren,

I do not have anything else except the erection of the family Chaetosphaeriaceae a year before Réblovà has written her paper about the genus Chaetosphaeria. There is just a key to Chaetosphaeriaceae genera with some comments.

regards,
björn