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01-06-2025 09:37

Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

04-07-2025 20:12

Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

03-07-2025 20:08

Francois Guay Francois Guay

I found this interesting yellowish asco growing on

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

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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.