14-03-2023 11:53
Margot en Geert VullingsSeen on stems of faded Gentian between Carex. We
13-03-2023 10:14
Enrique Rubio
Does anyone have access to this article?CARLSEN T.
13-03-2023 10:33
Katarina PastircakovaHi there,I'm looking for the following literature:
12-03-2023 11:15
Castillo Joseba
Discomicete recolectado en madera seca de limon (C
12-03-2023 10:11
Thierry Blondelle
Hello !I'm a new member from France.I require your
12-03-2023 00:13
Alex Akulov
Dear colleaguesI need your advise about fimicolous
10-03-2023 21:20
Rubén Martínez-Gil
Hola a todos.Subo unas fotos de un asco que encont
11-03-2023 22:04
Lothar Krieglsteiner
.. this one we found repeatedly in the Algarve, he
06-03-2023 21:28
Lothar Krieglsteiner
... found in the Algarve, near Sao Bartolomeu Mess
on a trouvé cet Orbilia sur le bois de bouleau. Les petits et grands ascocarpes, tous les deux, avaient les mêmes caractéristiques microscopiques.
Hi,
We found this Orbilia growing with Mollisia-type ascos on a birch log. Both the glassy-looking small ascocarps and the larger opaque ones had the same microscopy. The ascocarps were small (up to 0.65 mm) and large (up to 2.2 mm).
Paraphyses had swollen heads up to 3.5 um wide.
Asci were 35-45 x 3-4.
In my books I was unable to find a bright yellow Orbilia with spores of these dimensions ie 7-8.5 x 2-2.5.
Steve
Hello Steve,
I think you give pictures of two different discomycetes. The spores you measured are not from an Orbilia (maybe a Hymenoscyphus or Bisporella, as the macrofotos look like), but the next picture with the asci is. In this asci I see minute roundish spores, and I think this is what was earlier determined as Orbilia coccinella (s.l.). Zotto surely knows more, but this for the moment.
Regards from Lothar
I even think it is O. xanthostigma with reniform warted spores
Zotto
Zotto was right - the small one is Orbilia xanthostigma - and so is the large yellow one. Over 10 days they have both developed mature knobbly reniform spores. It's a very big Orbilia at 2.2 mm!
The spores which confused me were from the nearby Mollisia type asco.
That was a real mystery,
Thanks,
Steve
