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30-04-2024 16:22

Could this be Ciborinia pseudobifrons?
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Dear forum members,On April 25 2024, I found one f

03-05-2024 18:04

Rutstroemia fruticeti?
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Hello, Found by Laurens van der Linde on Rubus fr

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Hypoxylon fuscum
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Bonjour, Une question à propos de la réaction a

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long-necked anamorph embedded in wood
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Hi all, Found late last week in a New York City p

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Hi! Found in Sweden. Ascomata with haris, se

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Hello, everyone.An idea for this pyreno, I found u

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Bonjour. Petite pézize récoltée au sol en bordu

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Hyphomycete on Calypogeia suecica
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Hi!We observed this hyphomycete growing between le

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asco aquatique
maurice pelissier maurice pelissier

BonjourTrouvé dans un torrent de montagne au Chir

29-04-2024 21:51

Anamorph with very large dark round conidia found on Cedrus
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Hi everyone, Found on attached branches of top pa

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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.