Irish lichens

Lecanora chlarotera
Order: Lecanorales       Family: Lecanoraceae

Species: Lecanora chlarotera sens str.

Growth type crustose.
Photos: On deciduous trees. Cork, SW Ireland.

Very variable. Smooth or warted creamy-grey or grey thallus, prothallus absent. Numerous buff to red-brown apothecia with thick, slightly crenulate or smooth margins. Epithecium overlaid with coarse crystalline granules, large crystals present in apothecia margins. Spores simple, 10-15 x 6-8 Ám. Micro photos below.
Vouauxiella lichenicola can occur on the discs.

Common on trees, wooden fences and posts in unpolluted habitats. Thallus K+ yellow, C-, P-, UV+ dull orange. Apothecia margins P-

Frequently confused with Lecanora hybocarpa.
Similar: Lecanora argentata is P+ weak yellow, UV- and Lecanora sinuosa has apothecia margins contorted and over-arching discs


Lecanora chlarotera

Lecanora chlarotera

Lecanora chlarotera

Microscope photographs
Lecanora chlarotera, ascus and spores

Lecanora chlarotera

Lecanora chlarotera
Lecanora chlarotera

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