Irish lichens
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Order: Teloschistales Family: Teloschistaceae
Species: Caloplaca variabilis (Pyrenodesmia variabilis) Photos: On concrete. Aughinish, Co. Limerick, W Ireland. Identification needs confirming Grey to greyish-brown, areolate, rounded thallus, sometimes with a dark prothallus. Sessile apothecia with grey-blue pruinose black discs. The epithicium is pale, K+ purple. Thallus K-. Spores 14-16 x 7-9 µm, the septum 2-3 µm wide. Found on nutrient-rich calcareous rocks, walls and the horizontal copings of walls and bridges. |
Caloplaca variabilis. December 2009