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16-02-2026 21:25

Pyreno in the bark of Lonicera xylosteum
Andreas Millinger Andreas Millinger

Good evening,failed to find an idea for this fungu

17-02-2026 09:41

Diaporthe spiculosa?
Maren Kamke Maren Kamke

Good morning, I found a Diaporthe species on Samb

08-12-2025 17:37

Cucurbidothis parmeliarum (pithyophila var. cembrae) - on Abies
Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

17-02-2026 17:26

Recherche biblio Lambertella WHETZEL 1943
Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous, Je recherche cette publication :

03-02-2013 19:50

Helotium schimperi
Nina Filippova

Good time), I've compared this specimen with the

15-02-2026 04:32

Lentomitella like, aseptate?
Tomaz Vucko Tomaz Vucko

One more specimen that is giving me some descent a

17-02-2026 13:41

recherche de publi
Isabelle Charissou

Bonjour, est-ce que quelqu'un pourrait me fournir

16-02-2026 18:34

Exosporium tiliae
Thierry Blondelle Thierry Blondelle

Bonjour,La micro de cet anamorphe de Hercospora su

16-02-2026 17:14

Cucurbidothis specimens?
Joanne Taylor

Last week we published the following paper where w

16-02-2026 16:53

recherche de publi
Isabelle Charissou

Bonjour, quelqu'un pourrait-il me transmettre un

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Micropeziza(?) on Chamaenerion
Stefan Jakobsson, 05-06-2022 02:07
On an old stem of Chamaenerion angustifolium on the ground I found a swarm of small brown disks together with many other discomycetes.

The disks are sessile, 80-200 µm wide, with a darker slightly raised margin. The exciple is covered with a crust covering everything and preventing a view of what is behind. A similar crust is in part also covering the hymenium (pseudoepithecium?). Asci eight-spored, 32-55 × 5.9-7.3 µm, the bases are so agglutinated that I dont't know about croziers, negative in Lugol with and without pretreatment. The spores are 7.0-8.0 × 2.6-2.9 µm, with a few small guttules at each end. The parafyses are slighly clavate, 3.0-4.2 µm at apex and unfortunately so easily dying that I can't say anything about their contents.


I can't find a Micropeziza with such small spores - or is it something else?

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Hans-Otto Baral, 05-06-2022 11:07
Hans-Otto Baral
Re : Micropeziza(?) on Chamaenerion
Good docu! Micropeziza has very striking VBs in the living paraphyses (in the apex). I am not sure if you saw living paraphyses here. I would check with KOH if the pigment gets dissolved.

In my Cordieritidaceae folder, subfolder "Skyttea = Durella redbrown", might be similar species, but they show the ionomidotic recation and I never saw them on herbs.
Stefan Jakobsson, 06-06-2022 01:18
Re : Micropeziza(?) on Chamaenerion
I added KOH to a water mount but I could observe no dissolving pigments.

But I think I found some living parafyses. They have a not very refractive guttule at the apex. They are very sensitive to pressure - as soon as I touch the cover slip they are mostly gone.


The crust of my fungus is very similar to the the one on photo "Durella, II.2014-2" in the Skyttea folder.

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Hans-Otto Baral, 06-06-2022 09:30
Hans-Otto Baral
Re : Micropeziza(?) on Chamaenerion
This all looks indeed like a Micropeziza, but I wonder why these VBs in the paraphysis apices are angular, not roundish. Maybe they are already distorted?

This is actually the same species as you have pointed out:

"Javier Balda: I found this on "dry Angelica still standing" croziers - IKI -". I am not sure with the absent croziers, but it could be. Did you make up your mind regarding croziers?

I put the two in a folder "Angelica + Chamaenerion" but fear they are misplaced in Cordieritidaceae.
Stefan Jakobsson, 06-06-2022 19:56
Re : Micropeziza(?) on Chamaenerion
I made another attempt to find croziers and the result is that I am about 55 percent sure there are croziers. When applying some pressure on the preparation to make it thinner the result is that most old asci break just below the last spore. Young asci never get clearly visible.

Thank you, I suppose this is as far as it is possible to get with morphology alone.

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Hans-Otto Baral, 06-06-2022 21:22
Hans-Otto Baral
Re : Micropeziza(?) on Chamaenerion
On the right picture it is clearly withput croziers (in case these are ascus bases). A possibility is that some asci have protuberances which do not rejoin. Complete croziers are required in order to be sure.