https://dalib.cz/en/taxon/info/Arthonia%20calcarea
Arthonia calcarea | Dalib.cz
arthoniacalcarea
https://italic.units.it/index.php?procedure=taxonpage&num=170
Arthonia vinosa Leight.
Thallus crustose, thin, immersed or thinly powdery to granular, whitish to ochre-coloured, often stained yellow-orange, especially around the apothecia....
arthonia vinosaleight
https://www.tropicallichens.net/4135.html
Arthonia cinnabarina - Pictures of Tropical Lichens
The largest image collection of tropical lichens online.
arthoniapicturestropicallichens