Photo 70633379, (c) Alex Graeff, some rights reserved (CC BY-NC-ND), uploaded by Alex Graeff

Attribution © Alex Graeff some rights reserved Uploaded by alexgraeff Source iNaturalist Associated observations Photos / Sounds 3 photos What Smooth Rock Tripe (Umbilicaria mammulata) Observer alexgraeff Date May 1, 2020 05:38 PM HST Place Michigamme Township, MI, USA (Google, OSM) Date Added May 1, 2020 05:01 PM HST 2 IDs Research Grade View Sizes small medium large original