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17-04-2021 15:01

Khomenko Igor Khomenko Igor

Hi, I'm having trouble identifying this hairy disc

17-04-2021 19:34

Juuso Äikäs

This Thursday I found some tiny discos growing on

16-04-2021 08:53

Pierre-Yves Julien

Bonjour à tous, 1er post pour moi sur ce forum.R

17-04-2021 13:41

Angel Pintos Angel Pintos

Hello everybody,Anyone on the forum is from Götti

16-04-2021 22:02

Bo Valeur Bo Valeur

Hi thereThis Nice Lachnum was found on a dead bran

17-04-2021 11:45

Karl Soler Kinnerbäck Karl Soler Kinnerbäck

Hi!Could this be a Nigrograna? I first thought it

09-04-2021 18:44

Mirek Gryc

Hi.Probably anamorph but I have never seen so big

17-04-2021 09:18

Savic Dragisa

Hello everyone,on a corn stalk. I have no idea wha

12-04-2021 19:35

Mirek Gryc

Hello everyone.I'm not sure if it was a branch of

15-04-2021 14:24

Castillo Joseba Castillo Joseba

Me mandan el material seco recolectado en el compo

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Salix pyreno puzzle
Chris Yeates, 04-04-2021 19:35
Chris Yeates
I collected this fungus recently on a partially corticated narrow (16mm diameter) fallen branch of sallow Salix caprea/cinerea. There is a superficial resemblance to the fungus now known as Menispora glauca (= Chaetosphaeria ovoidea = Zignoella ovoidea) but it differs in that:

it was only present on the bark (growth rather superficial, not penetrating the bark fully, and not on adjacent decorticated areas

the shape of the perithecia was flattened hemispherical, with no hint of a beak/papilla

abundant interascal ?paraphyses

spores smaller (12.9)15.2-19.5(20.5) x 4-5.2µm, shape varying from ellipsoid to fusoid, filling the asci, full of droplets, becoming 3-septate

Any suggestions welcome

Amitiés, Chris
  • message #68218
  • message #68218
  • message #68218
  • message #68218
Nick Aplin, 05-04-2021 01:00
Re : Salix pyreno puzzle
Salut Chris,

I wonder whether you have Porina aenea- I think I can see an olivaceous thallus on the substrate....

Cheers,
Nick
Chris Yeates, 05-04-2021 15:20
Chris Yeates
Re : Salix pyreno puzzle
Nick - Je pense que tu as "mis le doigt dessus" as our French friends would say. I had foolishly set aside thought that it might be lichenised because I could see no green algal cells. However, a good spray of water and the colour gives it away - I can see where "aenea" comes from now. Plus, under the microscope orange cells of the Trentepohlia photobiont are obvious.

This short piece of Salix, is yielding up several interesting things - I am now locking antlers with a Capronia . . .

Thanks for taking the time, what with the excellent work you have clearly been doing recently in that lovely county:


Cordialement, Chris
  • message #68229
  • message #68229
Nick Aplin, 06-04-2021 16:21
Re : Salix pyreno puzzle
Hi Chris,

This lichen catches me out at least once every year - It seems that the photobiont can be pretty well camouflaged and it can grow in all sorts of unexpected places.

Glad you liked our Spring Fungus Project too - Porina aena cropped up several times in attempt to confuse us!

Amitiés,
Nick