And a bunch of other lichens on rock.
En paco´s Reserva Natural de Flora y Fauna Silvestre
On fallen branch of conifer
Bluish green upper, black lower, dark interior, thin tubes, occasional apothecia with brown disks, on ground under redwoods, attached to bark, cortex: C-, CK-, K+ yellow
Seaside bone lichen?
The Parmeliaceae is a large and diverse family of Lecanoromycetes. With over 2000 species in roughly 87 genera, it is regarded as the largest family of lichen forming fungi. The most speciose genera in the family are the well-known groups: Xanthoparmelia (800+ species), Usnea (500+ species), Parmotrema (350+ species), and Hypotrachyna (190+ species).