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13-02-2026 18:05

Tiny disc on Acer
Margot en Geert Vullings

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

14-02-2026 10:58

Asco blanc sur Diatrype
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

13-02-2026 03:30

Unknown near Pseudohalonectria
Tomaz Vucko Tomaz Vucko

Hello! I found these immersed perithecia on a stic

13-02-2026 18:02

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

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Aquatic sordariomycete - Ceratosphaeria?
Ibai Olariaga Ibarguren, 11-12-2013 08:37

 


Hi there,


I am trying to identify a non-stromatic pyrenomycete growing on submerged wood in a small stream from Tyresta, south to Stockholm (Sweden). The are is granitic and the water was dystrophic.


The perithecia grow in small groups, semiimmersed or almost superficial. the venter globose-subglobose, 0.6-0.8 mm, black, with a short cylindrical neck, apparently smooth. Asci unitunicate, cylindrical, 8-spored, with a distinct apical annulus, inamyloid (tested in Melzer), 196-210 x 10-11 µm. Spores ellipsoid-fusiform, with abundant guttules, 3-septate, 25.5-28.5 x 8.5-9.5 µm. The perithecial wall is composed of several layers of subglobose cells.


I initially thought it might be a Chaetosphaeria, but the asci are inamyloid. Then I searched in Ceratosphaeria, and also Zignöella, but did not find any species that fit.


Any idea? Thanks in advance!


Cheers,


Ibai.


 


 

  • message #26182
  • message #26182
  • message #26182
  • message #26182
  • message #26182
Martin Bemmann, 11-12-2013 08:46
Martin Bemmann
Re : Aquatic sordariomycete - Ceratosphaeria?
Hi Ibai,

try Annulatascaceae like this one:
http://www.ascofrance.fr/search_recolte/2457

Regards
Martin
Alain GARDIENNET, 11-12-2013 08:47
Alain GARDIENNET
Re : Aquatic sordariomycete - Ceratosphaeria?

See  towards Annulusmagnus triseptatus


Alain

Alain GARDIENNET, 11-12-2013 08:48
Alain GARDIENNET
Re : Aquatic sordariomycete - Ceratosphaeria?

Oh you were too fast Martin ! Grrrrr....


 

Ibai Olariaga Ibarguren, 11-12-2013 10:50
Re : Aquatic sordariomycete - Ceratosphaeria?

 


Thanks Martin and Alain! I had ruled out Annulatascaceae for some reason,but it fits A. triseptatus with no doubt.


I see now that there was a previous record of A. triseptatus from south Sweden.


Cheers,


 


Ibai.


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