Accès membres

Mot de passe perdu? S'inscrire

18-03-2024 22:12

Charles Aron Charles Aron

Hi All, Another dessication-tolerant Orbilia, thi

18-03-2024 12:24

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia,  recolectsada e

17-03-2024 15:50

Hardware Tony Hardware Tony

Found on last year's grass sps. on damp soil, I ha

17-03-2024 13:15

Patrice TANCHAUD

Bonjour, tous les ans je vois cette espèce sur P

18-03-2024 16:39

Juuso Äikäs

Hello,today I found a few scattered Orbilia fruitb

18-03-2024 14:41

B Shelbourne B Shelbourne

• Polydesmia: Distinctive macro, mostly on strom

16-03-2024 20:17

éric ROMERO éric ROMERO

Bonjour, J'ai besoin de votre aide pour ce Mollis

17-03-2024 20:58

Stefan Jakobsson

For a few days we had temperatures above freezing

17-03-2024 13:00

éric ROMERO éric ROMERO

Bonjour, Apothécie sessile, hémisphérique, jau

17-03-2024 18:00

Margot en Geert Vullings

We found these black fungi on a fallen twig of mos

« < 2 3 4 5 6 > »
Orbilia on Tilia
Charles Aron, 18-03-2024 22:12
Charles AronHi All, 

Another dessication-tolerant Orbilia, this time about 2m up on an attached branch of Tilia. The curved ascospores are similar to curvatispora but at 7-10xc1 seem a bit shorter and wider. Asci are 26-30x3 and glued together with an epithecium. The paraphyses are constricted apically. 

I'd be grateful for any suggestions. 

Charles. 


  • message #78654
  • message #78654
  • message #78654
  • message #78654
  • message #78654
  • message #78654
  • message #78654
Hans-Otto Baral, 19-03-2024 07:28
Hans-Otto Baral
Re : Orbilia on Tilia
Hmm, this looks interesting!

The paraphyses are apically lanceolate which is rare in the O. auricolor group to which I would assign this species. But who knows! Helpful would be to study the margin. Are there hairs or glassy processes? A view on the exterior or a section would clarify also the presence of hair-like cell rows there.

I would need to try my key in the monograph, startig with section Arthrobotrys, I cannot remember a match.

In which region did you collect this?

O. curvatispora is a synonym of O. auricolor (which is a collective species).
Charles Aron, 19-03-2024 10:57
Charles Aron
Re : Orbilia on Tilia
Hi Zotto, 

Thanks for your views on this. Here is another photo of the excipulum which may shed some light. The material was collected on Anglesey, North Wales. When I'm next in the locality I'll look out for more. Only found 2 apothecia. 

Best wishes, 

Charles. 

  • message #78656
Hans-Otto Baral, 19-03-2024 12:07
Hans-Otto Baral
Re : Orbilia on Tilia
A bit unsharp but it shows either exudate or short glassy processes.

The only species with lanceolate paraphyses I have in mind are O. jesu-laurae and O. blumenaviensis, but I thnínk both can safely be excluded.
Charles Aron, 19-03-2024 13:26
Charles Aron
Re : Orbilia on Tilia
Hi Zotto, 

Very interesting. Likely to be an undescribed species? I'll look out for more material. 

Best wishes, 

Charles.