Pyreno with interesting iodine reaction

23-03-2026 20:16

Coprotus 210226 315

Miguel Ángel Ribes

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24-03-2026 15:44

Leptodontidium cf. trabinellum

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Una para ID

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MYXOMYCETICOLOUS FUNGI

Lepista Zacarias

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Literature search

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Hymenoscyphus ¿calycinoides?

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Hysteriaceae ??

Petr Soucek

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Eutypa spec. (?)

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Pseudomassaria-like on Cornus alba

Edvin Johannesen

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19-03-2026 19:34

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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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