Order: Lecanorales Family: Parmeliaceae
Species: Hypotrachyna endochlora
Photos: On Willow. Gougane Barra, Cork, SW Ireland.
Identified by John Douglass
Pale blue-grey to yellowish-grey narrow lobes with sinuous axils and coarse, granular, yellowish soredia. Medulla pale yellowish, lower surface black with +/- dense rhizines. Apothecia rare.
Found on well-lit, acidic, nutrient-poor bark on trees in woodland and in salix carr, also on mossy rocks.
Cortex K+ yellow. Medulla K-, C+ orange, KC+ orange, P-
Could be confused with Parmotrema perlatum
Hypotrachyna endochlora. August 2009