Photo 240213, (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 Plitt's Rock Shield (Xanthoparmelia plittii) Observer cals Date December 8, 2012 Place 38.1537..., -122.57... (Google, OSM) Date Added January 23, 2013 09:02 PM PST 1 ID Needs ID View Sizes small medium large original