Rhizocarpon geographicum

    Description

    A distinctive, but variable, yellow-green to bright yellow crust forming lichen, that cracks into angular sections and has flat, black apothecia.

    Identification difficulty

    Habitat

    On exposed, base poor rocks.

    When to see it

    All year round

    UK Status

    Widespread and fairly frequent, especially in the north and west.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland.

    Leicestershire & Rutland Map

    UK Map