Photo 60714915, (c) Jason Dart, some rights reserved (CC BY-NC), uploaded by Jason Dart

Attribution © Jason Dart some rights reserved Uploaded by j-dar Source iNaturalist Associated observations Photos / Sounds 3 photos What Hoary Cobblestone Lichen (Acarospora strigata) Observer j-dar Date January 2020 Place California, US (Google, OSM) Date Added February 2, 2020 08:22 AM PST Description On calcareous rock. 2 IDs Research Grade View Sizes small medium large original