Caloplaca chalybaea

Caloplaca chalybaea

Observation - Caloplaca chalybaea - UK and Ireland. Description: On limestone pavement, nearly dismissed as Aspicilia calcarea but it didn't look quite right. Ascospores polarilocular, c. 11-13 x 6.5-7µm. Epithecium with colourless crystals.

On limestone pavement, nearly dismissed as Aspicilia calcarea but it didn't look quite right. Ascospores polarilocular, c. 11-13 x 6.5-7µm. Epithecium with colourless crystals.