Lecanora on concrete, Isle of Dogs - 2017

Lecanora on concrete,  Isle of Dogs - 2017

Observation - Lecanora on concrete, Isle of Dogs - 2017 - UK and Ireland. Description: I've cropped the first picture, hoping that someone will guide me towards identifying the crustose thallus with black apothecia on the right.

I've cropped the first picture, hoping that someone will guide me towards identifying the crustose thallus with black apothecia on the right.