Rhizocarpon geographicum


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

Identification difficulty

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.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map