Caloplaca teicholyta 3.jpg
Caloplaca teicholyta, growing on the side of a limestone gravestone, with a background of poorly developed Verrucaria macrostoma and a stunted lobe of C. flavescens. This material has the usual thinly placodioid margin and pruinose lobes. The dull olive green patches are of algae and are commonly seen in this species, especially in damp conditions. These algal tufts may be the photobiont which is partially 'escaping' from the soredia but this hypothesis hasn't been properly investigated.