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18-07-2025 23:03

Josep Torres Josep Torres

Hello.Fruitings between 51 and 130 microns in tota

17-07-2025 11:55

Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y abetos, en tieraEjemp

16-07-2025 17:34

Bernard Declercq Bernard Declercq

Hello,I have trouble distinguishing above mention

14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

15-07-2025 13:27

Angel Pintos Angel Pintos

Hello, does anyone have access to the following ar

16-01-2023 21:31

Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Gernot Friebes

Hi,do you think this collection could be R. ulmari

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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