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29-11-2009 12:48

Gernot Friebes

Hi, I found these two Orbilia on a dead, still

28-11-2009 18:53

Piet BORMANS Piet BORMANS

Bonjour, Pourrait-il s'agir de Tricharina gilva?

27-11-2009 19:18

Gernot Friebes

Hi, could you please help me with this pyrenomy

26-11-2009 23:57

Yannick Mourgues Yannick Mourgues

Bonsoir. Trouvé sous Pinus une belle troupe de

19-11-2009 22:19

Martin Bemmann Martin Bemmann

Dear all, I found this Pyreno on a still attach

18-11-2009 10:08

Gilbert MOYNE

Voici un petit asco qui me pose problème pas trè

18-11-2009 01:54

Munari Enrico

Questa Helvella bianca é stata raccolta in locali

17-11-2009 22:22

Pablo Chacón Pablo Chacón

Bonne nuit, Voir si vous m'avez élaguée appor

15-11-2009 22:32

Pablo Chacón Pablo Chacón

Bonne nuit tout. Description macroscopique

15-11-2009 00:01

Yannick Mourgues Yannick Mourgues

Salut les aquatiks, Salut à tous. Pouvez-vous

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Orbilia spec. 1
Gernot Friebes, 29-11-2009 12:48
Hi,

I found these two Orbilia on a dead, still attached branch of Rosa, ca. 150 cm above the ground.

The first species (the one I show here) has spores of 6-8(9) x 2-3 µm with straight SB which fill 1/2 to 2/3 of the spores. The asci are 8-spored and the paraphses often septate (they look somehow chain-like).

Thanks in advance your help!

Best wishes,

Gernot
  • message #9640
Gernot Friebes, 29-11-2009 12:49
Re:Orbilia spec. 1
micros
  • message #9641
Gernot Friebes, 29-11-2009 12:49
Re:Orbilia spec. 1
spores
  • message #9642
Jean-Paul Priou, 29-11-2009 14:02
Jean-Paul Priou
Re:Orbilia spec. 1
cela devrait aller vers gambelli
jPP
Hans-Otto Baral, 29-11-2009 15:31
Hans-Otto Baral
Re:Orbilia spec. 1
Another possibility would be O. trapeziformis. O. gambelii has usually ellipsoid spores and trapeziformis trapezoid, but sometimes the difference is not as clear. A distinct difference is in the SCBs. Could you please make a median section and look in the living excipular cells on flanks and margin? O. gambelii has there rather conspicuous SCBs (angular, usually pale orange) which trapeziformis never has.

O. gambelii is a (sub)mediterranean species. But O. trapeziformis I so far never had on Rosa.

Perhaps you could make more spore photos: Is there sometimes a short tail or at least a more tapered spore base?

Zotto
Gernot Friebes, 29-11-2009 18:16
Re:Orbilia spec. 1
Hi,

well, now I know that Orbilia is a really mean genus. I wanted to make a section of an apothecium and suddenly there were different spores - there is a third species on the substrate. I'll show it as Orbilia spec. 3.

Now to O. trapeziformis/gambelii. I think it is trapeziformis because of the form of the spores (there were some with a tail which I, however, could not photograph because they always swam away) and because there weren't any SCBs in the excipular cells.

Best wishes,

Gernot
  • message #9652
Gernot Friebes, 29-11-2009 18:18
Re:Orbilia spec. 1
spores
  • message #9653
Hans-Otto Baral, 29-11-2009 20:37
Hans-Otto Baral
Re:Orbilia spec. 1
Splendid! These star-shaped Trinacrium-conidia belong to Orbilia, and well possibly to this trapeziformis, but they could belong also to another one, though surely not to clavuliformis and septispora. Who knows how many you will further detect :-)

Zotto