Accès membres

Mot de passe perdu? S'inscrire

25-03-2026 15:06

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me confirm

25-03-2026 10:35

Hulda Caroline Holte

Hello,I collected this species growing on a dead b

25-03-2026 13:54

Enrique Rubio Enrique Rubio

Does anyone know where I could download Paoletti's

25-03-2026 15:46

Michel Hairaud Michel Hairaud

Bonjour, Je sollicite de l'aide pour cette récol

24-03-2026 19:59

William Slosse William Slosse

Hello everyone,On 23/03/26, I found the following

21-03-2026 15:13

Lepista Zacarias

Hello everyone, Does any one know of any literatu

24-03-2026 21:37

Elisabeth Stöckli

Bonsoir,Sur bois (tronc) très pourri de conifère

24-03-2026 21:07

Ethan Crenson

Hello all, A friend collected this asco in a wood

23-03-2026 20:16

Miguel Ãngel Ribes Miguel Ángel Ribes

Good eveningI'm unable to identify this Coprotus o

24-03-2026 15:44

Åge Oterhals

I hope someone can confirm the name of this collec

« < 1 2 3 4 5 > »
Orbilia rose
Camille Mertens, 24-05-2020 11:31
Bonjour à tous.


Sur branche (alnus?), en bordure d'un petit ruisseau et en compagnie de Hymenoscyphus kathiae.

Diamètre : max 1mm

Spores : 6,6 - 8,7 x 1,25 - 1,4 µm

Difficile de trancher entre plusieurs espèces proches l'une de l'autre.

Merci de votre aide.

Camille
  • message #63375
  • message #63375
  • message #63375
  • message #63375
  • message #63375
  • message #63375
Hans-Otto Baral, 24-05-2020 11:49
Hans-Otto Baral
Re : Orbilia rose
Should be Orbilia rosea indeed :-)

No joke. O. sarraziniana is similar but differs in the upper spores inverted in the ascus (SBs downwards).
Camille Mertens, 24-05-2020 12:03
Re : Orbilia rose
Vielen Dank Zotto
Camille Mertens, 25-05-2020 10:31
Re : Orbilia rose
Hi Zotto.

Looking again under the microscope I found this.
Could it be the helicoon conidia stage?
Regards.
Camille
  • message #63395
Hans-Otto Baral, 25-05-2020 11:03
Hans-Otto Baral
Re : Orbilia rose
No, these are coloured conidia of a different shape.
Lothar Krieglsteiner, 25-05-2020 18:03
Lothar Krieglsteiner
Re : Orbilia rose
Hello Zotto,
is rosea another Name for luteorubella? In my Memory sarraziniana and luteorubella were the two species separated mainly by spore orientation in the Ascus.
I never heard of rosea.
Best regards, Lothar
Hans-Otto Baral, 25-05-2020 20:46
Hans-Otto Baral
Re : Orbilia rose
Hi Lothar

you need to wait for the 2nd part of the monograph :-)

Section Helicoon will be there on top.

O. rosea is very similar to O. luteorubella but has anguillospora-like conidia in contrast to O. luteorubella with Helicoon. So without the conidia it is difficult. Our idea was that pure rose apothecia more probably belong to O. rosea. Genetically they are very different. And O. rosea goes up the mountains and prefers running water, whereas helicoon-like conidia are adapted to standing water bodies.

Zotto
Juuso Äikäs, 25-05-2020 23:30
Re : Orbilia rose
I wonder what is the best way to find the conidia from a sample. Is there a particular technique for it or does it just sometimes show up in a microscope view? I think I read somewhere that with some species it is present only in a culture. I've still got a last year's sample that I posted here that was O. rosea or luteorubella and was thinking that maybe it's possible to find the conidia and arrive at a more accurate conclusion...
Hans-Otto Baral, 26-05-2020 06:35
Hans-Otto Baral
Re : Orbilia rose
This is very difficult. In this group of semi-aquatic species you will very rarely see them on the substrate. In culture it is more probable though not easy to trigger their formation. The "easiest" way is a sequence.