As can be seen on the photos accompanying Observation 212211 the bark of the Fraxinus tree where this lichen lives is almost covered by thalli of Dirina ceratoniae. Among them very small thalli of another lichen can be seen: greenish thalli with lecanorine apothecia, being similar to some Rinodina spp., but one cannot exclude that it can be one of the many Lecanora spp..