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15-04-2025 15:06

Francois Guay Francois Guay

I found this small white disco on decaying deciduo

10-04-2025 10:09

Mathias Hass Mathias Hass

Hi, Found in March on last years stick from Rubus

15-04-2025 21:39

Andreas Gminder Andreas Gminder

Dear all,struggeling as every year with the aquati

13-04-2025 22:47

éric ROMERO éric ROMERO

Bonjour, Je sollicite votre avis pour cette colle

09-04-2025 19:37

Miguel Ãngel Ribes Miguel Ángel Ribes

Good afternoon This 1-2 mm Mollisia was growing o

14-04-2025 23:19

Viktorie Halasu Viktorie Halasu

Hello, I've microscoped exsiccate of an Otidea wh

14-04-2025 15:11

Lennert Gees

Greetings!For my master's dissertation I work on c

13-04-2025 17:23

Yanick BOULANGER

Bonjour à tousVoici un Lachnum que je n'arrive pa

13-04-2025 10:21

Castillo Joseba Castillo Joseba

Mer mandan el material de Galicia (España),  rec

13-04-2025 13:00

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I guess the best option how to label this co

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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