Caloplaca citrina agg.


A bright golden yellow or chrome yellow crust forming lichen. The true identity of British "citrina" is disputed at present and we have therefore treated this species as an aggregate.

Identification difficulty

On rocks, walls and other artificial substrates.

When to see it

All year round.

UK Status

Apparently common throughout Britain, including urban areas.

VC55 Status

Fairly frequent in Leicestershire and Rutland.

be our species champion

Leicestershire & Rutland Map


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

UK Map