Photo 749580, (c) tom_carlberg, some rights reserved (CC BY-NC), uploaded by tom_carlberg

Attribution © tom_carlberg some rights reserved Uploaded by tom_carlberg Source iNaturalist Associated observations Photos / Sounds What California Pore Lichen (Pertusaria californica) Observer tom_carlberg Date March 28, 2014 04:46 PM PDT Place Marin Headlands, GGNRA (Google, OSM) Date Added March 28, 2014 05:18 PM PDT Description On chert on bluff above surf. 2 IDs Research Grade View Associated taxa CC California Pore Lichen (Pertusaria californica) Info Photo (c) tom_carlberg, some rights reserved (CC BY-NC), uploaded by tom_carlberg Sizes small medium large original