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05-03-2026 10:07

White apothecia on pine cone
Hulda Caroline Holte

Hello, I found and collected this species growing

07-03-2026 13:06

Phaeohelotium parasulphuratus ?
éric ROMERO éric ROMERO

Bonjour tous, Sur cône d'épicea fortement imbu,

23-12-2025 08:27

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

28-02-2026 11:05

Peziza
Yanick BOULANGER

Bonjour à tousLe 24/02/2026 à Montmacq, devant m

08-03-2026 14:05

Helvella lacunosa
Thierry Blondelle Thierry Blondelle

Bonjour à tous,Sur 3 récoltes supposées de H. l

07-03-2026 22:22

Volutella?
Josep Torres Josep Torres

Hello.Some very tiny conidiomes collected in the D

06-03-2026 17:51

Orbilia?
William Slosse William Slosse

Good evening all,On March 4, 2026, I found the fol

05-03-2026 16:30

Is this Diaporthe rudis?
François Bartholomeeusen

Dear forum members, On the 2nd of February 2026,

06-03-2026 09:41

indian literature
Alain GARDIENNET Alain GARDIENNET

Hi forum, I'm now looking for another reference c

05-03-2026 19:29

Ciboria caucus?
William Slosse William Slosse

Good evening everyone,On March 4, 2026, I found th

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Small white discomycete
Francois Guay, 15-04-2025 15:06
Francois GuayI found this small white disco on decaying deciduous wood in Québec, Canada.
 

•Asci: 40.8–45.1 × 4.1–5.4 µm, IKI+

•Some paraphyses seem to be IKI+; they turn all blue

•Spores: 5.3–7.3 × 1.9–2.7 µm


Here is the iNat link for photos: https://www.inaturalist.ca/observations/270017818

Any ideas on what it could be?
Thank you 

François
Hans-Otto Baral, 15-04-2025 16:24
Hans-Otto Baral
Re : Small white discomycete
Interesting! Such amyloid vacuoles exist, for instence in Rutstroemia alnobetulae as I remember. But in such a hyaloscyphoid species I am surprized. Perhaps the paraphyses must be alive in order to react? Is the reaction also in MLZ?
Francois Guay, 15-04-2025 19:01
Francois Guay
Re : Small white discomycete
Thank you, Zotto. Yes, the specimens were alive. I have not tried MLZ, but I will do so today and keep you updated. I will also send some specimens for sequencing.
Francois Guay, 15-04-2025 22:31
Francois Guay
Re : Small white discomycete
Hi Zotto,
I did the microscopy in MLZ and found no amyloid reaction in the paraphyses. I tried again with IKI and got some positive reaction; some paraphyses are turning blue, though not all of them.

Looking at the specimens again macroscopically, I noticed that some have a small pseudostipe with a blackish coloration. Do you have any idea what genus this could belong to?
Thanks
François
Hans-Otto Baral, 16-04-2025 07:59
Hans-Otto Baral
Re : Small white discomycete
I tend to assume a Pezizellaceae because of the VBs though only faintly refractive. Lack of hairs contradict a Ciliolarina. Macroscopically I also thought a Leptodontidium which is another family (Leptodontidiaceae).
Francois Guay, 17-04-2025 00:04
Francois Guay
Re : Small white discomycete
Very interesting, Thank you Zotto, I will update this post when I get the DNA sequence!