A placodioid species that may be dull lemon-yellow to bright yellow-orange and pruinose. The lobes are convex and branched with wider tips. The centre of the thallus is areolate and is covered with irregular, granular to flattened isidia.
Thallus: K+ purple
In Scotland, Caloplaca verruculifera is found on nutrient-rich siliceous and calcareous rocks and fenceposts, especially when used as bird perches, along the coast. BLS distribution map
scottishlichens.co.uk 