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13-02-2026 18:05

Margot en Geert Vullings

On February 9, 2026, we found these small hairy di

13-02-2026 18:02

Nogueira Héctor

November 2025 León (SPAIN) ID Help Hello! Thi

13-02-2026 03:30

Tomaz Vucko Tomaz Vucko

Hello! I found these immersed perithecia on a stic

12-02-2026 21:34

patrice Callard

Bonjour, la face inférieure des feuilles ce certa

11-02-2026 22:15

William Slosse William Slosse

Today, February 11, 2026, we found the following R

12-02-2026 14:55

Thomas Læssøe

https://svampe.databasen.org/observations/10581810

11-02-2026 19:28

Lothar Krieglsteiner Lothar Krieglsteiner

on small deciduous twig on the ground in forest wi

25-04-2025 17:24

Stefan Blaser

Hi everybody, This collection was collected by JÃ

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

10-02-2026 17:42

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me donner

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Tiny disc on Acer
Margot en Geert Vullings, 13-02-2026 18:05
On February 9, 2026, we found these small hairy discs on a dead branch of Acer.

Disc:
0.2-0.4 mm in size, underside dark, hairs lighter to the top, hymenium dark.


Structure:
Only textura intricata visible.


Hairs:
Hairs completely encrusted.
Encrustation loosens in KOH, no change in KOH + Melzers.


Asci:
Difficult to find due to the many hairs and paraphyses.
Measured in water: (43.2) 43.21 - 43.2 × 6.5 - 6.76 (6.8) µm, Q = 6.4 - 6.68 (6.7)
Croziers + we think.
IKI neg, also after KOH + Melzers J neg.


Paraphyses:
Cylindrical with sept.


Spores:
Hyaline with 2 guttules mostly at the poles, sometimes a few smaller guttules.
Measured in water: (6.8) 7.1 - 7.8 (8.2) × (2.2) 2.3 - 2.67 (2.7) µm, Q = (2.6) 2.8 - 3.2 (3.4)


Is it possible to say what genus and perhaps what species this could be?
Many thanks in advance, Geert&Margot


 

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