Accès membres

Mot de passe perdu? S'inscrire

27-03-2024 22:53

Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

26-03-2024 17:14

Juuso Äikäs

These little black ascos were growing on a dead, d

25-03-2024 13:41

B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

25-03-2024 21:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

26-03-2024 14:37

DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-03-2024 11:06

michel bertrand

Bonjour, Malgré de nombreuses recherches, je n'a

25-03-2024 14:08

Ursula Kozik

Bonjour et bonne journée, On m'a envoyé une tro

25-03-2024 03:56

B Shelbourne B Shelbourne

• Scuttelinia: Macro and habitat.• S. scutella

25-03-2024 20:21

DAVID MARCOS DAVID MARCOS

Bonjour, je m'appelle David et je débute dans l'i

« < 1 2 3 4 5 > »
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