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Order: Teloschistales
Family: Teloschistaceae
Species: Variospora aurantia (Caloplaca aurantia) Growth type placodioid.Photos: On limestone, The Burren, W Ireland. BLS Burren meeting 2009 Radiating orangey-yellow thallus, lobes with distinctly flattened tips. Area behind lobe tips often paler, thallus centre darker. Numerous large orange-brown apothecia with lighter margins. Asci 8-spored, the spores 10-13 x 8-10 µm. Thallus and apothecia: K+ crimson / purple. Occurs on sunny, nutrient-rich calcareous rocks and tombstones. Similar: Caloplaca flavescens |
Caloplaca aurantia. BLS Burren meeting April 2009