Notes:
On Quercus agrifolia branch tip in old coast live oak woodland within a mile of the ocean, at the western end of the Transverse Range.

Thallus grey with greenish cast in places, with ascending wavy lobes, K+Y, C-. Medulla white, C+R, K-. Underside blackish in center, brown at lobe tips, lower cortex wrinkles dark against brown background in younger material, older lobes white where cortex layer appears to have fallen off, rhizines dense at center of thallus, simple to somewhat branched, absent at lobe tips.