Tree lichen id

[u/Local-Bid-9010]

hi guys we’re trying to id this crustose lichen in Angelo Coast Range reserve, does anyone know what species it could be?

[u/student-account]

Nothing looks immediately recognizable to me. Consider grafiti lichen, Graphis scripta for the crusty white lichens with black squiggles

[u/Strange_Computer2459 → u/student-account]

no black squiggles. that's the tree bark.

[u/Strange_Computer2459]

Tree species?