Caloplaca citrina agg. - 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.
On rocks, walls and other artificial substrates.
All year round.
Apparently common throughout Britain, including urban areas.
Fairly frequent in Leicestershire and Rutland.
Leicestershire & Rutland Map
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