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Growth type foliose.
Photos: Ballyrisode, Co. Cork and Foynes, Co. Limerick
Light-grey thallus with long, narrow lobes, pseudocyphellate and with prominent cilia. White undersurface with some scattered rhizines. Usually very fertile, dark apothecia with thick, swollen margins, discs often +/- pruinose. Soredia absent.
Often coastal, also found inland in Ireland on well-lit basic-barked and nutrient-rich twigs and branches. Cortex: K+ yellow
