Photo 63468264, (c) Alexis, some rights reserved (CC BY), uploaded by Alexis

Attribution © Alexis some rights reserved Uploaded by alexis_orion Source iNaturalist Associated observations Photos / Sounds What Chiseled Sunken Disk Lichen (Circinaria contorta) Observer alexis_orion Date March 9, 2020 04:00 PM CET Place Berliner Innenstadt, Berlin, Germany (Google, OSM) Date Added March 14, 2020 03:54 PM CET 2 IDs Research Grade View Sizes small medium large original Copyright