Lecanora orosthea Lecanoraceae
Lecanora orosthea

Growth type crustose
Chemistry: K+ dirty-yellow > brownish, C-, KC+ yellow, UV+ dull orange

Occurs on dry, vertical, siliceous rocks, walls and churchyard memorials. Also on bark of Birch and Beech

Diffuse or areolate yellowish or yellow-green thallus, often with paler prothallus. Soralia form on margins of the areoles, the pale yellow soredia spreading to cover the thallus. Apothecia are rare.
Probably the sorediate counterpart of Lecanora sulphurea

Similar: L. expallens and saxicolous Pyrrhospora quernea C+ orange


Lecanora orosthea


Lecanora orosthea
Lecanora orosthea
Shapwick, Dorset. March 2014

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