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13-02-2026 03:30

Unknown near Pseudohalonectria
Tomaz Vucko Tomaz Vucko

Hello! I found these immersed perithecia on a stic

13-02-2026 18:05

Tiny disc on Acer
Margot en Geert Vullings

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

13-02-2026 18:02

Help ID
Nogueira Héctor

November 2025 León (SPAIN) ID Help Hello! Thi

12-02-2026 21:34

Attaque des feuilles de Quercus suber
patrice Callard

Bonjour, la face inférieure des feuilles ce certa

11-02-2026 22:15

Rutstroemia maritima?
William Slosse William Slosse

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

12-02-2026 14:55

Brown-spored and multiseptate loculo on Euonymus europaeus - Denmark
Thomas Læssøe

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

11-02-2026 19:28

Pezizaceae spec. from Germany
Lothar Krieglsteiner Lothar Krieglsteiner

on small deciduous twig on the ground in forest wi

25-04-2025 17:24

Cosmospora/Dialonectria spec.
Stefan Blaser

Hi everybody, This collection was collected by JÃ

09-02-2026 22:01

Sp
ruiz Jose

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

10-02-2026 17:42

Hélotiale blanche sur Sambucus racemosa
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me donner

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Ciboria-like apothecium on deciduous stick
Stefan Jakobsson, 11-08-2022 00:45
On a thin deciduous stick (Salix/Alnus/Betula) on moist sand I found a light brownish grey apothecium 4 mm diam. The excipulum is t. globulosa and the medulla t. intricata. The spores are (15.2)15.7-18.0(19.6) × (4.5)4.7-5.4(5.7) µm with many medium sized guttules. The asci are 128-152 × 7.1-11.9 µm and the praphyses are filled with low refractive guttules.

I have difficulties finding even a genus; it has much in common with Ciboria but I don't think the spores fit in.


I would appreciate opinions on this one.


Stefan

  • message #73663
  • message #73663
  • message #73663
  • message #73663
Hans-Otto Baral, 11-08-2022 07:50
Hans-Otto Baral
Re : Ciboria-like apothecium on decoduous stick
Yes, clearly sclerotiniaceous. Although very well documented, I have no clear idea. Spore guttulation together with globulosa could point to Rutstroemia bolaris, but that is only known from Carpinus and its spores are much larger and the VBs in the paraphyses brownish and elongated.  Perhaps you can clarify the substrate? Alnus and Betula have very characteristic perforations of the vessels (in radial section).
Stefan Jakobsson, 11-08-2022 23:41
Re : Ciboria-like apothecium on deciduous stick
Thank you! I think Salix can be excluded.
  • message #73673
Hans-Otto Baral, 12-08-2022 09:10
Hans-Otto Baral
Re : Ciboria-like apothecium on deciduous stick
Yes! And Betula vs. Alnus is difficult. Perhaps it works with a cross section but I was repeatedly in doubt.