20-01-2026 17:49
Hardware Tony
I offer this collection as a possibility only as e
15-01-2026 15:55
Lothar Krieglsteiner
this one is especially interesting for me because
17-01-2026 19:35
Arnold BüschlenHallo, ich suche zu Cosmospora aurantiicola Lite
16-01-2026 00:45
Ethan CrensonHi all, On decorticated hardwood from a New York
18-01-2026 12:24
Josep Torres
Hello.An anamorph located on the surface of a thin
08-12-2025 17:37
Lothar Krieglsteiner
20.6.25, on branch of Abies infected and thickened
Biscognauxia? from Australia
Hans-Otto Baral,
06-09-2007 22:34
Bon jouron 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
Hans-Otto Baral,
06-09-2007 22:36
Re:Biscognauxia? from Australia
in section
Hans-Otto Baral,
06-09-2007 22:36
Re:Biscognauxia? from Australia
in Lugol
Jacques Fournier,
20-09-2007 09:06
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
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
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
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
3127.gif
Hans-Otto Baral,
20-09-2007 16:43
Re:Biscognauxia? from Australia
Here the osioles
