Lecanoraceae Lecanora pruinosa Growth type crustose, placodioid Chemical results: K+ weak yellow, C+ orange, P-, UV+ orange Local distribution on limestone churchwalls, rare on natural limestone. BLS conservation evaluation: LC NS Placodioid whitish to pale yellow-green thallus, granulate-pruinose, the centre +/- areolate. Prothallus absent. Apothecia with persistent pruinose margins, discs reddish-brown with white-grey pruina. Similar: Lecanora muralis C-, UV-. Caloplaca teicholyta K-, C-

Lecanora pruinosa
All Saints, Hilton, Dorset. March 2014