Order: Lecanorales Family: Lecanoraceae
Species: Lecanora compallens
Photos: On roadside tree. Aughinish Alumina, Co. Limerick, Ireland. Identified by Brian Coppins
Thin, immersed, pale grey thallus with irregular patches of punctiform soralia. Yellowish-green soredia, spreading over thallus leaving narrow marginal zone. Apothecia and pycnidia absent.
Thallus K-, C-, P-, UV-
Soredia K+ yellow to yellow-brown, C-, P-, UV+/- pale orange
On the more exposed side of wayside and parkland trees and shrubs. Also found on worked timber.
Similar: L. barkmaniana, K+ yellow, C-. L. expallens, C+ orange
Lecanora compallens. December 2009