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19-02-2026 13:50

Margot en Geert Vullings

We found this collection on deciduous wood on 7-2-

19-02-2026 12:01

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia (España), recole

17-02-2026 09:41

Maren Kamke Maren Kamke

Good morning, I found a Diaporthe species on Samb

16-02-2026 21:25

Andreas Millinger Andreas Millinger

Good evening,failed to find an idea for this fungu

08-12-2025 17:37

Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

17-02-2026 17:26

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous, Je recherche cette publication :

03-02-2013 19:50

Nina Filippova

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

15-02-2026 04:32

Tomaz Vucko Tomaz Vucko

One more specimen that is giving me some descent a

17-02-2026 13:41

Isabelle Charissou

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

16-02-2026 18:34

Thierry Blondelle Thierry Blondelle

Bonjour,La micro de cet anamorphe de Hercospora su

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Lachnum-like fungus
Nicolas VAN VOOREN, 14-05-2017 19:36
Nicolas VAN VOORENHere is a collection (unfortunately not in a very good condition) of a small Lachnum-like fungus, growing on a small piece of wood (maybe Salix), near a pond.
The apothecia are very small, 0.2-0.5 mm, and stipite, totally white. Crystals are abundant on the ectal excipulum.
Asci are IKI+ (bb) and seem to be aporynchous. Paraphyses are lanceolate, protuding the asci.
Hairs are roundish at the top, measure 55-65 × 3-4 µm, with a refractive content, and also with a amorphous matter at the top. Ascospores are narrow fusoid, elongated, 15-21 (22.5) × 1.1-1.8 µm, OCI ~2-3.

At first sight, I thought it was a Lachnum or Dayscyphella species, but this type of hairs doesn't remind me any species in these genera.
Any suggestion?
  • message #48834
  • message #48834
  • message #48834
Hans-Otto Baral, 14-05-2017 20:37
Hans-Otto Baral
Re : Lachnum-like fungus
Hi Nicolas
such large ascospores are unknown in Lachnum to my knowledge, although the hairs would in my opinion fit the genus. Since both hairs and spores are dead, it is very difficult to make up one's mind. With such spores the asci should also be extraordinarily large? No photo of the parapyses?

The figured apo looks to me larger than 0.5 mm judging from the hair length, maybe because of squasing.

Zotto
Nicolas VAN VOOREN, 14-05-2017 20:49
Nicolas VAN VOOREN
Re : Lachnum-like fungus
I saw that Lachnum schoenoplecti have such large spores, but it doesn't grow on wood.
Hans-Otto Baral, 14-05-2017 21:01
Hans-Otto Baral
Re : Lachnum-like fungus
Yes, on grasses exist several species with such a spore size.