Pyreno with interesting iodine reaction

14-02-2026 22:45

Vexillomyces/Claussenomyces

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Hy!I would ask for some help determing this specie

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Literature request

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Unknown near Pseudohalonectria

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Asco blanc sur Diatrype

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Bonjour à toutes et tous,Pourriez-vous m'aider à

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Hola colegasEstoi interesado en este articulo, Agn

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Pyreno with interesting iodine reaction

Juuso Äikäs, 01-04-2024 19:32

These little black, round pyrenos were growing scattered on a well-decayed, decorticated Picea abies trunk together with Dacrymyces stillatus. The perithecia are up to ca. 0.25 mm wide.

The asci have a thickened apex, IKI-. The spores measure 10.5 - 11.9 × 3.5 - 4.4 µm. A couple spores appeared to have a septum.

The interesting thing is the hymenium's IKI reaction: it turned a nice vinaceous color -- seems like a rather distinctive feature.

But again I've no idea about the species or genus. Anybody got an idea what this is?

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