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23-05-2023 18:49

Andgelo Mombert Andgelo Mombert

Bonjour, Sur branche morte attenante de Sophora j

23-05-2023 18:41

Andgelo Mombert Andgelo Mombert

Bonsoir, Ascomes globuleux avec ostiole fendu, ty

23-05-2023 08:18

Leandro Sánchez Leandro Sánchez

Bonojur,Sur Salix sp. , jusqu'à 47 mm de diamètr

21-05-2023 00:46

Malcolm  Greaves Malcolm Greaves

I found Melanospora lagenaria on a fallen and deca

22-05-2023 09:52

Juuso Äikäs

A couple days ago I found this anamorph on a petio

17-05-2023 14:59

Luc Lenaerts Luc Lenaerts

Hello,On the 11th of May 2023 I found in Hengelhoe

18-05-2023 14:03

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,J'ai trouvé tout récem

12-05-2023 00:04

SAAVEDRA MÓNICA SAAVEDRA MÓNICA

Las medidas esporales son de T. alnicola pero hay

17-05-2023 21:18

Rot Bojan

I found a "fungus" on a dry Anthriscus cf. sylvest

18-05-2023 07:33

Mirek Gryc

Hello everyone A friend sent me some photos askin

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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