Teloschistaceae Variospora flavescens (Caloplaca flavescens) Growth type placodioid (crustose with lobed margins) Chemical results: K+ crimson / purple Very common on hard calcareous rocks, walls, headstones and memorials. Host to Intralichen christiansenii, Weddellomyces epicallopisma Thallus is +/- circular or arc-shaped with narrow yellow-orange lobes and a whitish centre which often disintegrates with age. Numerous orange apothecia with paler margins. Soredia and isidia are absent. Ascospores are polarilocular and swollen at the septum, 12-15 x 8-10 µm. Similar: Caloplaca aurantia and Caloplaca saxicola

Caloplaca flavescens
Wareham churchyard, Dorset. August 2012