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30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 06:57

Ethan Crenson

Hi all, Another find by a friend yesterday in Bro

30-06-2025 19:05

ALAIN BOUVIER

Bonjour à toutes et à tousJe cherche à lire l'a

30-06-2025 14:45

Götz Palfner Götz Palfner

This is a quite common species on Nothofagus wood

25-06-2025 16:56

Philippe PELLICIER

Bonjour, pensez-vous que S. ceijpii soit le nom co

29-06-2025 18:11

Ethan Crenson

Hello all, A friend found this disco yesterday in

28-06-2025 17:10

Peter Welt Peter Welt

I'm looking for: RANALLI, M.E., GAMUNDÍ, I.J. 19

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

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Durella sp. ?
Maren Kamke, 01-01-2014 15:28
Maren KamkeHi again,
on the same piece of decidious wood on which the Phaeohelotium trabinellum grows are small redbrown apothecia. They are very small with 0,05 mm max, the turbinate apothecia are fleshcoloured to redbrown and become black with age.
Spores (6-10) 8,5 x 2,91 (2,5-3) µm, hyalin, 1-septate, already in the ascus. Asci 8-spores, biseriate, IKL negative, 52-54 x 6-9 µm with croziers. There are asci? which seem to have no spores and a somewhat purplebrown content which goes into the medium with KOH treatment. Paraphyses are septate and branched and apikal hooked, 1,5 µm.
My guess is Durella uncinata.
Thanks
Regards Maren
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Hans-Otto Baral, 01-01-2014 20:49
Hans-Otto Baral
Re : Durella sp. ?
Hi Maren

oh yes, this is my "Durella uncinata". Not often encountered.  We had it on Quercus, Fraxinus, Carpinus, Corylus, Alnus, and Tilia, but I think always on attached branches.

Did you look whether your wood is ring-pored? Then it could easily be determined.

Zotto
Maren Kamke, 02-01-2014 07:47
Maren Kamke
Re : Durella sp. ?
Hi Zotto,
I have no experience with microscopic wood-determination, but after comparing the image, I think it ist Alnus.
Regards Maren
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Hans-Otto Baral, 02-01-2014 10:06
Hans-Otto Baral
Re : Durella sp. ?
Sehr gut!

Yes, Alnus is probable. Did you also try a radial section? There you will see the perforations of the pores with many steps, see below

Zotto
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Maren Kamke, 02-01-2014 11:25
Maren Kamke
Re : Durella sp. ?
Ja, habe ich, die gezeigten Elemente sind da. Alnus ist in dem Gebiet auch häufig vertreten.
Liebe Grüße
Maren
Hans-Otto Baral, 02-01-2014 12:48
Hans-Otto Baral
Re : Durella sp. ?
Prima, danke!