Teloschistaceae Leproplaca chrysodeta (Caloplaca chrysodeta) Growth type crustose Chemical results: K+ red Found on dry, shaded calcareous rocks, walls and mortar, sometimes spreading over mosses. Thallus forms a thick, areolate crust of yellowish-grey or mustard coloured, powdery granules. Granules are globular. Apothecia unknown. Similar: Sterile Caloplaca citrina agg. has brighter yellow soredia and occurs on well-lit calcareous rocks and walls

Caloplaca chrysodeta
Wool and Lytchett heath, Dorset. February 2013, 2014