Lecanora polytropa 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
Lecanora polytropa
Studland churchyard, Dorset. June 2013

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