Photo 65244038, (c) Joe Walewski, some rights reserved (CC BY-NC), uploaded by Joe Walewski

Attribution © Joe Walewski some rights reserved Uploaded by jwalewski Source iNaturalist Associated observations Photos / Sounds What Smooth Rock Tripe (Umbilicaria mammulata) Observer jwalewski Date March 31, 2020 06:55 PM CDT Place Lake County, MN, USA (Google, OSM) Date Added March 31, 2020 08:51 PM CDT 2 IDs Research Grade View Sizes small medium large original