Irish lichens
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Order: Teloschistales Family: Teloschistaceae
Species: Caloplaca flavocitrina Photos: Thallus of small yellow-orange, flat or flexose areoles. Margins with paler soredia that can cover much of thallus. Apothecia frequent, discs darker than thallus, margins rarely sorediate. Saxicolous and corticolous. Occurs throughout Ireland on calcareous rocks, limestone, mortar and cement. Also found on base-rich bark. K+ red-purple. Similar: Caloplaca citrina |