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11-04-2021 11:40


Bonjour à toutes et tous,Avec cette écologie (ai

10-04-2021 16:53

William Slosse William Slosse

Hello everyone,recently I found a large growing pl

10-04-2021 20:12

Andgelo Mombert Andgelo Mombert

Bonsoir, Un magnifique Nectria s.s. (?) sur branc

11-04-2021 12:09

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia,  recolectada en

10-04-2021 13:56

jean claude chasle

Bonjour,Récolté en bordure de mare sur carex :Ap

10-04-2021 20:07

Sergey Markov

I found today small black pycnidia in the cuticle

09-04-2021 07:57

Josep Torres Josep Torres

Hola.Unas diminutas fructificaciones fotografiadas

10-04-2021 09:03


Bonjour à toutes et tous,Que pensez-vous de cette

08-04-2021 21:17

Pauline. Penna

Hello EveryonePlease could you help me with this s

10-04-2021 09:24

Mirek Gryc

Hi.About a month ago I downloaded a piece of wood

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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....

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!