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14-05-2024 21:43

Thierry Blondelle Thierry Blondelle

Bonjour,A côté de Hystérographium fraxini, ces

14-05-2024 09:19

Hans-Otto Baral Hans-Otto Baral

Hi, I want to announce for next Sunday 17.00 middl

14-05-2024 19:48

B Shelbourne B Shelbourne

• Hymenoscyphus: Habitat, macro, spores, paraphy

14-05-2024 09:50

Yannick Mourgues Yannick Mourgues

Hi. Found on decorticated wod of Populus cf. alba

13-05-2024 12:48

Eduard Osieck

After eight years (*) I found the same apiosporous

11-05-2024 18:08

B Shelbourne B Shelbourne

• Mollisia on tree leaves: On dead Quercus leave

12-05-2024 11:48

Michel Hairaud Michel Hairaud

Bonjour , Voici une récolte d'une Rhytismataceae

10-05-2024 17:40

Anna Klos

Good afternoon, Thursday during an inventory we f

11-05-2024 00:33

Ethan Crenson

I'm not entirely sure that Encoelia-like is the ri

11-05-2024 10:09

Luc Bailly Luc Bailly

Hello all, Does anyone have access to this? Thyr

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Orbilia spec. 2
Gernot Friebes, 29-11-2009 12:59
here is the second one, which looks very interesting to me.

It grew together with the first Orbilia on a branch of Rosa ca. 150 cm above the ground. The spores are 11-14 x 2.5-3.5 µm, often septate (also in living state and inside the living asci!) with one (rarely two) septa. The SB is 3-4.5 µm long, slightly curved to sigmoid. The Asci are 8-spored and up to 53 x 7.5 µm.

Best wishes,

Gernot

  • message #9643
Gernot Friebes, 29-11-2009 12:59
Re:Orbilia spec. 2
micros
  • message #9644
Gernot Friebes, 29-11-2009 12:59
Re:Orbilia spec. 2
spores
  • message #9645
Jean-Paul Priou, 29-11-2009 13:56
Jean-Paul Priou
Re:Orbilia spec. 2
forme des sspores +et Spore body + septation conforme pour setispora. la seule Orbilia septée Rosa semble être un nouveau support pour ce taxon..
Attendons la confirmation du Docteur es Orbilia.
JPP
Hans-Otto Baral, 29-11-2009 15:24
Hans-Otto Baral
Re:Orbilia spec. 2
Hi Gernot

seems actually to be O. septispora as Jean-Paul suggests! On your ascus photos it is not clear because they are so small, but if you say they were septate inside the living asci, and up to 2 septate, it cannot be O. quaestiformis, the alternative which has also also mostly much more curved spores.

Originally I found O. septispora on Melilotus but in later years finds were mainly on Phragmites. However, we finally had it also on Typha, Juglans and Lonicera. So indeed a new substrate.

Please let me know the collection data.

Zotto
Gernot Friebes, 29-11-2009 15:42
Re:Orbilia spec. 2
Hi,

thanks to both of you! Here is another picture of an ascus.

Best wishes,

Gernot

  • message #9650
Hans-Otto Baral, 29-11-2009 15:50
Hans-Otto Baral
Re:Orbilia spec. 2
yes, the septa are clearly seen, only the ascus is perhaps not really turgescent (difficult to say), at least there is one spore at the very base, maybe the ascus base was broken. Perhaps the ascus was alive when unbroken, but this cannot be said with certainty.

i am quite sure you will find mature living asci when making a hand section.

Zotto