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28-06-2024 10:50

Thomas Læssøe

Spores ca. 47 x 32 µm, 2-celled, highly constrict

05-07-2024 00:46

Villalonga Paco

1 cm growing on herbaceous material (Carex sp?) in

30-06-2024 14:17

Thierry Blondelle Thierry Blondelle

HelloSur bois mort d'Alnus en milieu humide (bord

17-05-2024 16:25

Pavel Jiracek

Erioscyphella lunata, found on a fallen needle of

01-07-2024 17:16

Josep Torres Josep Torres

Salut.Quelques discomycètes rougeâtres entre 1,5

01-07-2024 14:55

Torbjørn Lindhardt

Does anybody have experience growing ascocarps fro

27-06-2024 01:36

Richard VALERI Richard VALERI

Salut à tous.J'ai lu ici que Zotto était plutôt

22-06-2024 13:35

Sven Heinz Sven Heinz

Hello, Could this be Camposporium pellucidum? The

26-06-2024 21:08

Hans-Otto Baral Hans-Otto Baral

On the underside of a very rotten board in our gar

26-06-2024 22:43

Thierry Blondelle Thierry Blondelle

Hello, Found on a wet piece of wood  (Fraxinus ?

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Trichonectria ? Bionectriaceae ? Between algae on Picea abies.
Perz Piotr, 27-09-2009 00:05
Dear Asco-Friends

Yesterday I find this little, orange "nectrioid" fungus between algae on Picea abies wood. Because of short, hyaline, thick-walled hairs I'm thinking about Trichonectria. The hairs are septate.
Subiculum abundand, white, all over the base of perithecium.

Because of characteristic ascospores (asci are 8-spored) I think, you can help me to identifi this fungus with the macrophotos and micrs of ascospores.

best wishes
Pimpek
  • message #9101
Perz Piotr, 27-09-2009 00:07
Re:Trichonectria ? Bionectriaceae ? Between algae on Picea abies.
very similar, macroscope and habitat & ecology was my found of Psoroglaena abscondita (Coppins & Vězda) Hafellner & Türk - but totally w/o hairs.
  • message #9102
Perz Piotr, 27-09-2009 00:08
Re:Trichonectria ? Bionectriaceae ? Between algae on Picea abies.
I think the ascospores are very characteristic, They are 2-celled (= 1-septate), also inside of living asci.

  • message #9103
Perz Piotr, 27-09-2009 00:10
Re:Trichonectria ? Bionectriaceae ? Between algae on Picea abies.
very similar, macroscope and habitat & ecology was my found of Psoroglaena abscondita (Coppins & Vězda) Hafellner & Türk - but totally w/o hairs.

I think the ascospores are very characteristic, They are 2-celled (= 1-septate), also inside of living asci.

Note, that the perithecim collapsed when dry,

The hyaline, septate, thick-walled projecting hairs are mostly present around the ostiolar region (exactly like in Trichonectria rubefaciens (Ellis & Everh.) Diederich & Schroers)

thank you
Piotr
Javier Etayo, 27-09-2009 17:23
Re:Trichonectria ? Bionectriaceae ? Between algae on Picea abies.
Your sample could fit well in Trichonectria, a genus with several lichenicolous species. I have not seen this spores in any of the lichenicolous species, this and its habitat made it very interesting.
Best wishes. Javier Etayo