Photo 174327510, (c) aarongunnar, some rights reserved (CC BY), uploaded by aarongunnar

Attribution © aarongunnar some rights reserved Uploaded by aarongunnar Source iNaturalist Associated observations Photos / Sounds 4 photos What Verrucaria muralis Observer aarongunnar Date December 26, 2021 12:51 PM CST Place Ozaukee County, WI, USA (Google, OSM) Date Added December 31, 2021 06:02 PM CST 2 IDs Research Grade View Sizes small medium large original