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27-09-2009 00:05

Perz Piotr

Dear Asco-Friends Yesterday I find this little,

23-09-2009 14:17

Alain BRISSARD

Une pézize remise lors d'une exposition de la SML

22-09-2009 21:51

Alain GARDIENNET Alain GARDIENNET

I have problem to translate this : Ascomawand 20

22-09-2009 21:36

Stip Helleman Stip Helleman

Bonne nuit, has anybody a idea about this thing,

22-09-2009 12:17

Michel RIMBAUD

Hello. Found on decayed wood of Betula. Disco dia

22-09-2009 09:47

Alain GARDIENNET Alain GARDIENNET

Bonjour, Curieuse récolte que ce Pleospora imme

21-09-2009 11:24

Philippe Silar

Bonjour, nous sommes à la recherche d'une cultu

21-09-2009 09:29

Alain GARDIENNET Alain GARDIENNET

Bonjour, J'ai fait une récolte d'un Massarina

20-09-2009 15:51

Mireille Lenne

Bjr, Sous la bino j'avais pensé au genre Arniu

19-09-2009 08:16

Alain GARDIENNET Alain GARDIENNET

Bonjour, Je recherche de la doc sur le genre Dia

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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