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19-03-2014 20:05

Lasiobelonium or Similar on Stems of Epilobium
Peter Thompson

Hello Everyone,I have received some data and image

21-03-2014 13:26

Discomycete Growing on Fruit Body of Diatrypaceae
Peter Thompson

Hello Everyone,I have been given some data and ima

23-03-2014 22:39

Nitschkia broomeana - 20140323
Lepista Zacarias

J'ai trouvé ceci sur un arbuste presque à mourir

22-03-2014 22:38

Anamorfo? en Pinus halepensis
Javier Ormad Javier Ormad

¡Hola a todos!Estos especimenes de hasta 0.5 mm,

23-03-2014 10:21

Cyphelloidae or Asco ?
Pavol Palo

Hi everybody, It was found on the Corylus sp. Fr

27-04-2012 12:02

Illustrated genera of ascomycetes
Alessio Pierotti Alessio Pierotti

Qualche amico del forum ha i due volumi di Richar

22-03-2014 13:40

Unknown teleomorf of a pyrenomycete?
Ralph Vandiest Ralph Vandiest

Hello, On salix branches (attached to the tree) c

22-03-2014 00:11

Pseudonectria?
Björn Wergen Björn Wergen

Hi friends,I have a collection from Braga, Portuga

16-03-2014 21:25

Coelomycète s/Solidago canadensis
Luc Bailly Luc Bailly

Bonsoir à tous,Trouvé à Roche-à-Frêne, Ardenn

21-03-2014 22:19

Cistella en Carex pendula
Javier Ormad Javier Ormad

Hola a todos!Otra especie en Carex pendula, hojas

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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