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25-03-2023 14:42

Edvin Johannesen Edvin Johannesen

I have received this dried specimen for microscopy

29-03-2023 13:05

Georges Greiff

Bonsoir,I would like to please request the followi

28-03-2023 19:16

Enrique Rubio Enrique Rubio

J'aimerais connaître la revision de Van Vooren su

28-03-2023 01:34

Stefan Jakobsson

On wood of a still fairly hard trunk of spruce I f

28-03-2023 11:04

Margot en Geert Vullings

Found this Lichenoptella (Trichothyrina) on Juncus

27-03-2023 00:36

Juuso Äikäs

A finding from last fall: a plentiful amount of lo

17-11-2014 15:55

Salvador Tello

Hola a todos.Tengo este hongo que he cogido crecie

24-03-2023 16:08

Bernard Declercq Bernard Declercq

Hello,A friend of mine collected galls with pynidi

24-03-2023 12:53

Riet van Oosten Riet van Oosten

Hello, Saw this strange ascus Schizoxylon composi

25-03-2023 09:04

Bernard Declercq Bernard Declercq

Hello,I am looking for following paper:Motohashi K

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Xylariaceae (?) from Portugal
Lothar Krieglsteiner, 05-02-2023 00:33
Lothar Krieglsteiner.. Algarve, Foia near Monchique, on wood of (?) Castanea. I first thought of a Biscogniauxia, but was a bit flubbergasted by the spores. They are hyaline at first, but partly become black in one of the two cells, they have a germ slit and the ascus porus reacts brightly blue in Melzer. The spores I measured about !3-18 (20)/7-8 µm. They are hyaline first (fotos in Melzers reagent), but some get dark at the larger cell alter. But most spores are obviously dispersed in hyaline state as can be seen by the light tendrils leaving the perithecia.
I am not sure if I saw a similar fungus on ascofrance not too long ago, but I cannot manage to find it again.
Who can help?
Yours, Lothar
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Björn Wergen, 05-02-2023 00:39
Björn Wergen
Re : Xylariaceae (?) from Portugal
Dear Lothar,
This is Biscogniauxia anceps.
Lothar Krieglsteiner, 05-02-2023 00:44
Lothar Krieglsteiner
Re : Xylariaceae (?) from Portugal
Hello Björn,
thank you very much! I did not know that there is a Biscogniauxia species with such spores. Great!
Yours, Lothar