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Very common lichen, of yellow foliose thalle and bright orange apothecia. My guess is Xanthoria parietina.
Found on a dead and decaying branch discarded next to a pathway going to a mixed forest (oak, beech, spruce and fir) on slopes of Jura mountain range, close to a larger settlement in Geneva lake valley. Found together with Brown-eyed Rim lichen and two other Parmelia lichens.