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08-09-2009 18:26

Pulvinula cf laeterubra
Pablo Chacón Pablo Chacón

Salut des amis, Dans cette occasion il me plair

07-09-2009 00:17

?Amphirosellinia nigrospora
Hans-Otto Baral Hans-Otto Baral

The other on Quercus pubescens bark could be Amphi

07-09-2009 00:03

?Teichospora
Hans-Otto Baral Hans-Otto Baral

When detecting Proliferodiscus tricolor on a stand

05-09-2009 16:52

Mollisia coerulans?
Luc Bailly Luc Bailly

Genre difficile s'il en est: je soumets donc mes o

04-09-2009 22:52

What on Alnus catkins?
Marja Pennanen

Fruitbodies 0,1 to 0, 3 mm wide. Spores 9-2 x 2-3

04-09-2009 18:46

Diaporthaceae sur tige morte de Rubus sp.
Luc Bailly Luc Bailly

Bonjour à tous, Mercredi dernier, j'ai trouvé

04-09-2009 07:51

Helvella albella vs H. capucina
Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour. Voici une récolte que je trouve ambiguÃ

03-09-2009 22:25

Sphaerosporella
Pablo Chacón Pablo Chacón

De bonnes nuits, un salut à tous. J'ai trouvé

02-09-2009 21:08

Lambertella sp.
Hermine Lotz-Winter

Bonjour, au bord d'un rivage dans le massif de

02-09-2009 19:38

Mollisia sp.
Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour. Encore un Mollisia problématique... Ap

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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