Are the Black Dots Part of the Grey Lichen or a mould or lichen on it?

Are the Black Dots Part of the Grey Lichen or a mould or lichen on it?

Observation - Are the Black Dots Part of the Grey Lichen or a mould or lichen on it?. Description: On a main road, not in a park or garden. On the bark of a tree where there are logs of orange and grey lichens.

On a main road, not in a park or garden.

On the bark of a tree where there are logs of orange and grey lichens.