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03-10-2024 20:56

Margot en Geert Vullings

These orange discs were found in September on mois

04-10-2024 17:08

Birgit Lüthje

I just found a very similar ascomycet on a heap of

05-10-2024 15:55

B Shelbourne B Shelbourne

• Macro and habitat suggest Humaria hemisphaeric

01-10-2024 17:02

B Shelbourne B Shelbourne

• Habitat and macro suggest Chlorociboria.• P

01-10-2024 16:15

Lothar Krieglsteiner Lothar Krieglsteiner

.. on deciduous twig, on and near old specimens of

01-10-2024 11:14

Michel RIMBAUD

Bonjour,La semaine dernière en réoltant des mycÃ

30-09-2024 22:15

Alan Smith

I found a 'forest' of hair-like structures on the

29-09-2024 13:17

B Shelbourne B Shelbourne

• Macro and habitat suggested Ciboria, and C. ba

22-09-2024 20:24

Robin Isaksson Robin Isaksson

Dear all, I did found this one on on S. acauli

08-09-2024 21:31

B Shelbourne B Shelbourne

• Stromatised substrate and macro like genus Rut

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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