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08-09-2025 19:07

ruiz Jose

Hola me pasan esta recolecta en madera de fraxinus

03-09-2025 21:59

Philippe PELLICIER

La Léchère, Col de la Madeleine, alt 1970m, au s

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

06-09-2025 21:40

David Chapados David Chapados

Hi, Does somebody know the genus that has those b

07-09-2025 11:34

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I have identified this fungus as Hymenoscyph

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

05-09-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour, hi everyone,Do you know where the fungari

05-09-2025 18:53

Robin Isaksson Robin Isaksson

Hi! Spores 1 septate; 12-13 x 3um Hairs 35-75

04-09-2025 20:11

Åge Oterhals

Saccobolus on dear droppings. Can any of you confi

03-09-2025 12:44

Enrique Rubio Enrique Rubio

Hi to somebody.I would like to know your opinion o

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Orbilia on Salix bark
Marja Pennanen, 30-06-2012 13:35
Hello,

I've been scanning some Salix bark lying under a dead tree near my home for some years. Today I found a big Orbilia on them.

They can be 2 mm wide.
The C-formed spores are about 8-10x1+ (too narrow for my microscope) and the SB is propably quite short.
The asci are about 30-40x3 and paraphyses narrow without swollen top.

It's been raining a lot here and loads of  for instance Orbilias can be found on logs lying on the ground. I seldomly collect them, because I have been concentrating on myxos lately.

But this seemed interesting for big size and light colour...

Marja
  • message #19058
  • message #19058
Raúl Tena Lahoz, 30-06-2012 16:02
Raúl Tena Lahoz
Re : Orbilia on Salix bark
Before Zotto gives you an opinion I will try luck, Orbilia auricolor?
Kisses,
Raúl
Hans-Otto Baral, 30-06-2012 16:26
Hans-Otto Baral
Re : Orbilia on Salix bark
Hi Marjy

I can only agree, Raul, though this is a collective species with not clearly known limits. If there are any conidie this would be important. Also the margin in section. But auricolores agg. is o.k.

Zotto
Marja Pennanen, 01-07-2012 00:24
Re : Orbilia on Salix bark
Hi Raul, Zotto,

O. auricolor did not come into my mind. I have found it before, but it was so very colourfully yellow.
I've noticed, that some of these Orbilias can vary in colour, but do they all?
Is it because this had not been in sun? Or maybe this had grown fast in the moist condition and has not met dry times-interesting.

I tried to catch conidias with no success this time.

Thankfully: Marja
Hans-Otto Baral, 01-07-2012 09:49
Hans-Otto Baral
Re : Orbilia on Salix bark
We still do not know how important colour is. I have the impression that yellow auricolor grows more light-exposed and might be more tolerant to desiccation, but I mainly saw auricolor +/- whitish. Bright yellow auricolor I am still interested in.

In luteorubella/sarraziniana I thought until recently that colour is unimportant. But now we have two observations: luteorubella with reddish-orange colour seems to form Helicoon, that with pale pinkish colour Anguillospora. And a few days ago we got a collection with pale pink and bright orange apos densely intermingled: the two colour variants differed in spore porientation! Are they two species or not? Hmmm, I do not know.

Zotto