Order: Lecanorales       Family: Stereocaulaceae Species: Lepraria caesioalba Growth type leprose, granular. Photos: Growing over moss on acidic upland rock. Ballingeary, Cork, SW Ireland. Identification confirmed by John Douglass Thallus forms rosette-shaped patches of greyish granules, often slightly darker in centre. Found on well-lit siliceous upland rocks, also over-growing mosses and on soil in similar habitats. Usually K+ faint yellow, C-, P+ orange but very variable.

Lepraria caesioalba growing over moss. March 2009