Order: Lecanorales       Family: Parmeliaceae Species: Parmelia omphalodes Growth type foliose. Photos: On upland and coastal rocks. Co. Cork, SW Ireland. Shiny thallus, +/- loosely attached to substrata. Lobes 2-4mm wide with truncated apices, dark brown, greyish in shade. Raised coarse, whitish pseudocyphellae. Apothecia infrequent, discs dark reddish brown with paler margins. Isidia and soredia absent. Occurs on upland and coastal exposed, nutrient-poor siliceous rocks. Occasional on acid-barked trees. Cortex: K+ yellow. Medulla: K+ orange-red, C-, KC+ orange, P+ orange, UV +/- glaucous Similar: Parmelia discordans. Medulla K-

Parmelia omphalodes. Ballingeary and Allihies, Co. Cork. May and June 2009