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21-03-2026 22:59

Petr Soucek

Good evening, I would appreciate some advice on th

21-03-2026 15:13

Lepista Zacarias

Hello everyone, Does any one know of any literatu

20-03-2026 12:53

Stefan Blaser

Hello everybody, In the field, from distance, my

20-10-2017 09:23

Garcia Susana

Este otro crecía en el mismo trocito de madera qu

20-03-2026 16:16

Edvin Johannesen Edvin Johannesen

These 0.5 mm diam. acervuli were breaking through

19-03-2026 19:34

Filip Fuljer Filip Fuljer

Hello everyone,a few days ago I collected this str

19-03-2026 18:25

William Slosse William Slosse

Good evening everyone, On 18/03/26 I found a few

17-03-2026 10:09

François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

19-03-2026 15:58

Stefan Blaser

Hello everybody, I hope for some hints... Macro:

19-03-2026 17:50

Enrique Rubio Enrique Rubio

Hi to everybodyThese thiny, blackish pseudothecia

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Parasite de Evernia prunastri
Michel Hairaud, 27-02-2026 17:51
Michel HairaudBonjour, 
Quelqu'un peut il me donner un conseil pour identifier ces ''apothécies'' sur thalles du lichen Evernia prunastri ? 
S'agit il d'un lichen parasite ou d'un ascomycète lichénicole ? 

Merci 
Amitiés. Michel
  • message #84664
Spooren Marco, 28-02-2026 15:27
Spooren Marco
Re : Parasite de Evernia prunastri
I guess this lichen-parasite is in to find in the neighborhood of Abrothallus De Not.Do i count 6 spores in the asci ?

Best,

Marco
Michel Hairaud, 28-02-2026 22:39
Michel Hairaud
Re : Parasite de Evernia prunastri
Thanks, Marco , 
Asci are mostly 8-spored actually. 


Best Regards. Michel
Paul Cannon, 01-03-2026 17:39
Re : Parasite de Evernia prunastri
I think this is probably an Arthonia, not Abrothallus - the asci and spores are quite different. I'm not aware of one that is a parasite of Evernia, it could be undescribed (if you believe that they are host-specific...)

Best wishes

Paul
Michel Hairaud, 02-03-2026 10:03
Michel Hairaud
Re : Parasite de Evernia prunastri
Thank you , Paul. 
Many features actually match this idea. 

Best, Michel