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07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

08-09-2025 19:07

ruiz Jose

Hola me pasan esta recolecta en madera de fraxinus

03-09-2025 21:59

Philippe PELLICIER

La Léchère, Col de la Madeleine, alt 1970m, au s

06-09-2025 21:40

David Chapados David Chapados

Hi, Does somebody know the genus that has those b

07-09-2025 11:34

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I have identified this fungus as Hymenoscyph

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

05-09-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour, hi everyone,Do you know where the fungari

05-09-2025 18:53

Robin Isaksson Robin Isaksson

Hi! Spores 1 septate; 12-13 x 3um Hairs 35-75

04-09-2025 20:11

Åge Oterhals

Saccobolus on dear droppings. Can any of you confi

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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