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26-03-2024 17:14

Juuso Äikäs

These little black ascos were growing on a dead, d

27-03-2024 22:53

Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

25-03-2024 13:41

B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

25-03-2024 21:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

26-03-2024 14:37

DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-03-2024 11:06

michel bertrand

Bonjour, Malgré de nombreuses recherches, je n'a

25-03-2024 14:08

Ursula Kozik

Bonjour et bonne journée, On m'a envoyé une tro

25-03-2024 03:56

B Shelbourne B Shelbourne

• Scuttelinia: Macro and habitat.• S. scutella

25-03-2024 20:21

DAVID MARCOS DAVID MARCOS

Bonjour, je m'appelle David et je débute dans l'i

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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