Lecanoraceae Lecanora polytropa Growth type crustose Chemical results: K+ indistinct yellow, C-, KC+ yellow, P-, UV- Occurs on siliceous rocks, walls and worked timber. Small inconspicuous or areolate yellowish-green or grey-green thallus, often surrounded by a black prothallus. Small pale yellow or greenish-yellow apothecia, the paler margins becoming excluded with age. Similar: Lecanora intricata has darker, emerald green-brown discs

Lecanora polytropa
Studland churchyard, Dorset. June 2013