A foliose species that forms neat round cushion-like tufts that consist of chestnut or grey-green lobes with a pale lower surface. It is easily recognised on basis of the abundance of relatively large, flat to convex, concolorous apothecia at the end of short lobes that may obscure the thallus.
Medulla: C-, K-, UV-
Cetraria sepincola is found in the central and eastern Scottish Highlands and The Borders. It mainly grows on thin, brittle twigs of birch and occasionally on rowan and fenceposts. BLS distribution map
Cetraria sepincola can be found alongside Tuckermannopsis chlorophylla and Melanohalea septentrionalis on birch branches.
Cetraria sepincola can be distinguished from Tuckermannopsis chlorophylla by the darker thallus, and the presence of abundant apothecia rather than soredia.
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