A yellow crust forming lichen often cracking and with lobed edges. The apothecia are deeper orange and crowded in the centre.

In the east of VC55 Caloplaca (=Variospora) aurantia is found on limestone in churchyards is found and this is easily confused with C. flavescens.

On calcareous rocks, walls and cement.

All year round

Common, especially in south eastern England.

Common in Leicestershire and Rutland.