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30-06-2025 14:45

Götz Palfner Götz Palfner

This is a quite common species on Nothofagus wood

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

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

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

27-06-2025 14:09

Åge Oterhals

I found this pyrenomycetous fungi in mountain area

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Green ascomycete on Sorbus and Malus
David Malloch, 07-03-2011 19:03
David MallochHello,

After three or four years of seeing this fungus, and not being able to identify it, I turn to you all for help. It grows on old decorticated branches of Sorbus decora, and sometimes apple as well, in very dry and bleached areas of the wood, usually accompanied by Propolis farinosa, Cryptodiscus pallidus and Agyrium rufum. It is common in the winter.

The ascomata are green and erumpent through the uppermost layer of the wood. They start with a small pore like a pyrenomycete but later open widely like Cryptodiscus. The asci are unitunicate (I think) and do not have conspicuous apical structures. The living asci do not have any bluing in Lugol's, although the contents become orange. There are inconspicuous croziers. In the picture they are shown in Shear's Mounting Medium with Ink Blue.

The ascospores are 4 to 8 per ascus, hyaline, smooth and transversely 3-septate. Occasionally there is an oblique septum, but this is uncommon. They measure about 18-19 X 6-7 µm.

Does anyone recognize this fungus?

Regards,

Dave
  • message #14612
Gernot Friebes, 07-03-2011 19:47
Re:Green ascomycete on Sorbus and Malus
David Malloch, 07-03-2011 19:54
David Malloch
Re:Green ascomycete on Sorbus and Malus
Hi Gernot,

Thanks for the tip. I guess I overlooked that group of posts.

Dave