Photo 217560336, (c) Jeff Ward, some rights reserved (CC BY-NC-SA), uploaded by Jeff Ward

Attribution © Jeff Ward some rights reserved Uploaded by lumenal Source iNaturalist Associated observations Photos / Sounds 4 photos What Cascade Knotweed (Polygonum cascadense) Observer lumenal Date July 26, 2022 04:42 PM PDT Place Willamette National Forest, Blue River, OR, US (Google, OSM) Date Added July 26, 2022 09:38 PM PDT 3 IDs Research Grade View Associated taxa CC Cascade Knotweed (Polygonum cascadense) Info Photo (c) Jeff Ward, some rights reserved (CC BY-NC-SA), uploaded by Jeff Ward Sizes small medium large original