Photo 260314, (c) CALS, some rights reserved (CC BY-NC-ND), uploaded by CALS

Attribution © CALS some rights reserved Uploaded by cals Source iNaturalist Associated observations Photos / Sounds What Pseudothelomma occidentale Observer cals Date February 16, 2013 Place Knowland Park, Oakland CA (Google, OSM) Date Added February 24, 2013 06:09 PM PST Description Found on old wooden post. Tags Knowland Park, California Lichen Society, crustose, lichen 1 comment 2 IDs View Sizes small medium large original