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03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

02-07-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello, bonjour.Here is the paper I'm searching for

30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 06:57

Ethan Crenson

Hi all, Another find by a friend yesterday in Bro

30-06-2025 19:05

ALAIN BOUVIER

Bonjour à toutes et à tousJe cherche à lire l'a

30-06-2025 14:45

Götz Palfner Götz Palfner

This is a quite common species on Nothofagus wood

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Orbilia vitalbae?
Viktorie Halasu, 02-01-2022 22:35
Viktorie HalasuHello, 

I have here a small light rose to light orange Orbilia on xeric twig of Euonymus europaeus, small tree along a path near a riparian forest, coll. 1. 1. 2022. 
Spores as shown. Paraphyses capitate. Asci 8-spored, lower spores inverted, dead ascus' apex is truncate, not thickened. No crystallic SCBs seen, globose SCBs present in excipulum. Slightly crenulate margin made of exudate "teeth". No glassy outgrowths. 

Is it vitalbae or trapeziformis? The latter I've seen only once so I don't know the species well enough. But the spores seem to have more rounded lower pole and more note-shaped SB than trapeziformis. 

Thank you in advance.
Viktorie
  • message #71288
Hans-Otto Baral, 03-01-2022 07:35
Hans-Otto Baral
Re : Orbilia vitalbae?
For my memory this looks more like trapeziformis because of the constantly subacute apex. SB shape is not far from what I illustrate in that species. But our concept of trapeziformis appears to be heterogeneous based on the few sequences, and vitalbae has very different spore lengths, I always wanted to divide it but finally gave up. Anyway, in vitalbae the rounded to obtuse spore apices strongly prevail.
Viktorie Halasu, 03-01-2022 10:16
Viktorie Halasu
Re : Orbilia vitalbae?
Dear Zotto,

thank you for clarifying this collection. I was thinking about vitalbae because I saw some similarity with the spores of HB 9165a (that untypical Swiss O. vitalbae on Sambucus racemosa). The other trapeziformis from the same forest had more attenuated lower spore ends. 

Viktorie
  • message #71292
Hans-Otto Baral, 03-01-2022 10:46
Hans-Otto Baral
Re : Orbilia vitalbae?
Ah, these are typical! Indeed this Sambucus sample is dubious, we did not manage to assign it unequivocally, and an attempt to obtain DNA failed.