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09-11-2025 13:20

Josep Torres Josep Torres

Hello.A tiny ascomycete, appearing as erupting gra

08-11-2025 12:10

Elisabeth Stöckli

Bonjour, Trouvé sur tiges mortes de Rubus (ronce

08-11-2025 00:29

Francois Guay Francois Guay

I found this species in Quebec, Canada, on herbace

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

08-11-2025 09:15

Michel Hairaud Michel Hairaud

Bonjour, Pouvez vous m'aider à identifier ce Mol

06-11-2025 16:50

Rot Bojan

Hello! Yesterday I found a fungus on or near a nee

05-11-2025 11:33

Pierre Repellin

Bonjpur,J'ai trouvé, sur une hampe florale d'Alli

04-11-2025 09:07

Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 12:43

Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

03-11-2025 21:34

Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

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Orbilia on Tilia (?)
Viktorie Halasu, 21-02-2017 21:29
Viktorie HalasuHello forum,

I got this nice collection but have no experience with Orbilias yet. What characters should I look for, please?
I didn't see those orange particles in excipular cells, but I might be wrong. Asci 8-spored, paraphyses fusiform. 
 
Thank you for any help / advice.
Viktorie
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Hans-Otto Baral, 21-02-2017 22:00
Hans-Otto Baral
Re : Orbilia on Tilia (?)
Dear Viktorie
this is Orbilia carpoboloides (= Habrostictis rubra, = Orbilia piloboloides, = O. lasia).
It is frequently on Ulmus, but also on other trees. Tilia would be the first time, but couldn't it be possible.

Would it be possible to include your collection data in our monograph? The species occurs across Europe and the northwest of N-America, but we have only scattered  data.

What is the pyrenomycete on which it partly grows?

If you could look at the broken wood of the branch: Ulmus is ring-pored with large pores, Tilia has small scattered pores.
Zotto
Viktorie Halasu, 21-02-2017 22:29
Viktorie Halasu
Re : Orbilia on Tilia (?)
Dear Zotto, 
thank you very much! 

The collector says you can of course use it. I'll send you locality data as soon as I get them.
 
I checked the wood structure and you're right, it's not Tilia but Ulmus or Fraxinus. I'll take a photo tomorrow.

The pyrenomycete is not determined yet. However, the photos (made by the collector) are from another twig and this one I was given looks differently (bigger and solitary stromata). I'll try to put it here as well (alas, I have very little practice with those either).

Viktorie
Viktorie Halasu, 22-02-2017 16:39
Viktorie Halasu
Re : Orbilia on Tilia (?)
Dear Zotto, 
the wood looks indeed like an Ulmus. I'll try the pyreno.
Viktorie
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Hans-Otto Baral, 22-02-2017 23:03
Hans-Otto Baral
Re : Orbilia on Tilia (?)
Yes, it is Ulmus: the small pores of the summertime are arranged in tangential rows. See my arrows.
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Hans-Otto Baral, 25-02-2017 22:13
Hans-Otto Baral
Re : Orbilia on Tilia (?)
Dear Viktorie
could you find out the collection data of this Orbilia?
Would be great to get them
Zotto
Viktorie Halasu, 25-02-2017 22:17
Viktorie Halasu
Re : Orbilia on Tilia (?)
Yes, I'm only waiting for a herbarium number to be given to that collection. Next week I should get it and then I'll send you complete data, if it's ok with you?

Hans-Otto Baral, 25-02-2017 22:27
Hans-Otto Baral
Re : Orbilia on Tilia (?)
No problem, i can wait :-)