Lichenicolous on thelotrema lepadinum

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Lichenicolous on thelotrema lepadinum

Robin Isaksson, 13-03-2020 21:41

Hi

found this on in sweden in old grown fostest.
need help with species, Opegrapha/ arthonia it seems? Was first thinking on A. Thelotrematis but Spores are to long.
Anyone have a clue?

”apotecia” react green it seems but this is a bit uncertain.
asci is 8-spored, more info on pictures.
Spores seen in Koh. Parafyses branched

Regards