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25-12-2024 19:07

Dirk Baert

Hello,I found this fungi on a slime mould.I think

23-12-2024 14:37

Josep Torres Josep Torres

Hello.Some tiny globose black ascomata found on De

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Rot Bojan

Hello!I've been working with this small fungus for

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Lucian Clanet Lucian Clanet

Hello,I'm trying to find information about the Hyp

21-12-2024 12:45

Marc Detollenaere Marc Detollenaere

Dear Forum,On naked wood of Fagus, I found some ha

24-12-2024 09:02

Charles Aron Charles Aron

Hi All, Recently I found this orange Disco growin

23-12-2024 12:10

Bernard CLESSE Bernard CLESSE

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

22-12-2024 21:42

Bometon Javier Bometon Javier

Habitat en el suelo, con presencia de Calluna mult

17-12-2024 12:33

Lothar Krieglsteiner Lothar Krieglsteiner

this fluffy anamorph was repeatedly found on decid

22-12-2024 10:19

Simon Gurtner Simon Gurtner

Hello,can anyone help me identify this small ascom

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Biscognauxia? from Australia
Hans-Otto Baral, 06-09-2007 22:34
Hans-Otto BaralBon jour

on a branch of a broad-leaved, Ficus-like tree in NE-Australia grew in association with Orbilia aff. vinosa a quite banal looking Xylariales resembling a Biscognauxia. The spores seem, however, unusual in their one end being distinctly truncate. Has anybody an idea what genus and perhaps species this is?

data: Sp. 9.5-12.5 x (5.3-)5.7-6 µm. Stroma 7-23 x 5-12 mm, 0.8 mm thick. HB 8609b.

Zotto
  • message #3035
Hans-Otto Baral, 06-09-2007 22:36
Hans-Otto Baral
Re:Biscognauxia? from Australia
in section
  • message #3036
Hans-Otto Baral, 06-09-2007 22:36
Hans-Otto Baral
Re:Biscognauxia? from Australia
in Lugol
  • message #3037
Jacques Fournier, 20-09-2007 09:06
Jacques Fournier
Re:Biscognauxia? from Australia
Hi Zotto,
sorry for the delay, I was off when you sent your message.
I agree it is likely a Biscogniauxia. In this genus several species have two-celled ascospores, a big brown one, bearing a germ slit, and a small hyaline one which usually collapses with time and leaves a truncate end. This can be seen in Xylaria, Anthostomella and Nemania too. One of the ascospores on your photo still has its dwarf cell, quarter SE
Your taxon would need further data to be safely identified. If the stroma does have punctate ostioles surrounded by a low rim and if ascospores have a long germ slit, it might be B. uniapiculata (Penz. & Sacc.) Whalley & Laessoe, a common pantropical species.
All my best,
Jacques
Hans-Otto Baral, 20-09-2007 16:42
Hans-Otto Baral
Re:Biscognauxia? from Australia
Hi Jacques

tnaks a lot, that helps. Yes, the spores have a long germ slit, visible at the lower right spore on my photo, here again. Now I believe the spores are originally 2-celled. The ostioles are simple minute craters, please see photo.
Zotto
  • message #3127
Hans-Otto Baral, 20-09-2007 16:43
Hans-Otto Baral
Re:Biscognauxia? from Australia
Here the osioles
  • message #3128