Photo 998081, (c) Christopher Tracey, some rights reserved (CC BY-NC-SA), uploaded by Christopher Tracey

Attribution © Christopher Tracey some rights reserved Uploaded by ctracey Source iNaturalist Associated observations Photos / Sounds What Spotted Knapweed (Centaurea stoebe) Observer ctracey Date July 3, 2014 04:32 PM EDT Place Erie, Pennsylvania, United States (Google, OSM) Date Added July 20, 2014 11:53 AM EDT 3 IDs Research Grade View Sizes small medium large original