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02-05-2026 12:42

Alain BRISSARD

Bonjour à tousJeuidi 30 avril dernier on m'a remi

02-05-2026 13:06

Pauline. Penna

Bonjour  Please can someone help me with this id

01-05-2026 22:45

Thierry Blondelle Thierry Blondelle

Bonjour à tous, Une récolte sur bouse séchée d

28-04-2026 20:07

Lothar Krieglsteiner Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

14-04-2026 05:32

Ethan Crenson

Hi all, A few weeks back a friend pointed out som

28-04-2026 20:33

Vitus Schäfftlein

Hello, I found Trochila ilicina on Ilex aquifoliu

30-04-2026 10:43

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia, España, 

30-04-2026 10:28

Rot Bojan

Hello, by appearance I would say that I am dealing

27-04-2026 18:48

Tony Moverley

Collected 23rd April 2026, Norfolk, EnglandSwarms

27-04-2026 20:52

Lothar Krieglsteiner Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

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Synarthonia ochracea
Gonzalez Garcia Marta, 07-03-2022 12:37
Good morning, I am studying an arthonial and using keys leads me to Synarthonia ochracea. I would like to know the opinion of someone who has more experience than me in this type of fungi.
The thallus is unnoticeable with black lirelas with well developed carbonaceous excipulum and with the hymenium exposed to the outside. On aging, these lirelas show an orange pruina visible only microscopically (40x) that is K+ purple. K- hymenophore. Spores are hyaline of 2-4 cells, with the second cell larger than the apical 17-20 x 4 microns. When the spores mature inside the asci they turn brown. They present then, a coarse verrucous exosporium. I would appreciate your opinions.

Thank you very much.
Franz Berger, 07-03-2022 13:09
Franz Berger
Re : Synarthonia ochracea
From where is it? Substrate?

This looks like Opegrapha ochrocheila, now Alyxoria o.


Franz
Gonzalez Garcia Marta, 07-03-2022 13:25
Re : Synarthonia ochracea
Hello Franz
The collection is from Tineo (Asturias- North of Spain), but the friend who gave me the material could not be sure if it was Betula or Castanea. 
By touch, I think it is Betula, and the absence of a thallus could coincide with the fact that it parasitized Graphis, although it is risky to say so. 
Franz Berger, 07-03-2022 19:21
Franz Berger
Re : Synarthonia ochracea
Ist definetily Alyxoria ochrocheila. An autotrophic lichen, the thallus is the same like Graphis. Thallus looks damaged by snails. Not parasitic!
Substrate supposed Castanea. Betula bark normally is  to acid forAlyxoria, and also Graphis

Yours Franz
Gonzalez Garcia Marta, 07-03-2022 19:50
Re : Synarthonia ochracea
Muchas gracias Franz. Quedo muy agradecida.
Saludos.