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18-03-2024 22:12

Charles Aron Charles Aron

Hi All, Another dessication-tolerant Orbilia, thi

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

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Me mandan el material de Galicia,  recolectsada e

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Hardware Tony Hardware Tony

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

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

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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

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Margot en Geert Vullings

We found these black fungi on a fallen twig of mos

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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. 


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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).